How We Know The Universe is Ancient

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The universe is precisely 13.8 billion year old - or so our best scientific methods tell us. But how do you learn the age of the universe when there’s no trace left of its beginnings?
Hosted by Matt O'Dowd
Written by Dan Falk & Matt O'Dowd
Graphics by Leonardo Scholzer, Yago Ballarini, & Pedro Osinski
Directed by: Andrew Kornhaber
Camera Operator: Bahaar Gholipour
Executive Producers: Eric Brown & Andrew Kornhaber
End Credits Music by J.R.S. Schattenberg: / @jrsschattenberg
#space #astrophysics #cosmology
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Пікірлер: 3 600

  • @pbsspacetime
    @pbsspacetime3 жыл бұрын

    Hey Space Timers! Due to some Corona related issues, we had a challenging time getting this episode ready and we ultimately left out the on screen credit for our very valued Patreon Supporters. So we'd like to give our Patreon supporters a top comment shoutout and let everyone know that regular on screen credit will return next week. Big Bang Supporters Alexander Tamas David Nicklas Fabrice Eap Juan Benet Morgan Hough Radu Negulescu Quasar Supporters Christina Oegren Mark Heising Vinnie Falco Hypernova Supporters Chuck Zegar Danton Spivey Donal Botkin Edmund Fokschaner Hank S John Hofmann John Pollock John R. Slavik Jordan Young Joseph Salomone Julian Tyacke Mathew Matthew O'Connor Matthew Ryan Syed Ansar Timothy McCulloch William bryan

  • @chrisnewell2107

    @chrisnewell2107

    3 жыл бұрын

    Who you looking at? Is there someone over my right shoulder?

  • @mrcatfish2100

    @mrcatfish2100

    3 жыл бұрын

    You guys believe in UFOs?

  • @shankhan6685

    @shankhan6685

    3 жыл бұрын

    Universe its just there... It can never zoom in zoom out its goes on n on unless all the physicality looses its energy to live and it all be just dark empty space . Which is "Nothingness" we just cant imagine that coz we never saw& things which we can't see we can't imagine anything... Its all dark ... Even when we close our eyes and whatever we imagine its still in a black background that is Nothingness and one cannot imagine that Darkness ... its like its just there it is "time" we dont know whats Future or Past its just ... "We live We go, our time is end" ... arjunxavier08@gmail.com 😉

  • @shankhan6685

    @shankhan6685

    3 жыл бұрын

    Imagine something apart from darkness??? Even if you imagine a white background and something or whatever you want , still you are imagining it in The background of Darkness... And thats Nothingness, you just cant imagine or think of anything... Its logical not Scientific...

  • @IDVACCINEDECEPTION

    @IDVACCINEDECEPTION

    3 жыл бұрын

    WRONG, 14.2 NOT 13.8

  • @laurachapple151
    @laurachapple1513 жыл бұрын

    In the alternate universe where Matt is a cook instead of a physicist, his show is called "Spice Time."

  • @tantrispicks2440

    @tantrispicks2440

    3 жыл бұрын

    One day there is a big bang from the microwave in the background. His house special, Cosmic Egg, has overheated and exploded. He decides to add Thyme and presto, Primordial Soup.

  • @Hahalol663

    @Hahalol663

    3 жыл бұрын

    This is great

  • @AverageAlien

    @AverageAlien

    3 жыл бұрын

    Space thyme*

  • @luisvalentin361

    @luisvalentin361

    3 жыл бұрын

    @@tantrispicks2440 you forgot to add some siracha😅

  • @astrognosis

    @astrognosis

    3 жыл бұрын

    Allah says in the holy Quran - We created the heavens and the earth and all between them in Six Days, (50:38) and also in chapter 41 , verse 10 And He placed on the earth firmly set mountains over its surface, and He blessed it and determined therein its [creatures'] sustenance in _four days_ without distinction - for [the information] of those who ask. in these two verse Allah says that he created universe in 6 days and then he created earth on the 4th day , which is 2/3 of 6 days. also earth was formed about 4.6 billion years ago , when the universe was about 2/3 of its present age. if we divide the age of universe into 6 parts , than this 1 day would be equal to about 2.3 billion years , and when the universe was 4 days old The God created the earth ,thats is the universe's age is 9.2 billion years old (2.3×4=9.2) ....also 2.3 billion year old= 1st day 4.6 billion year old= 2nd day 6.9 billion year old= 3rd day 9.2 billion year old=4th day, earth is created 11.5 billion year old= 5th day 13.8 billion year old= 6th day , present. The Quran exactly presents that the earth was formed (4.6 billion yrs ago)when the universe was about 9.2 billion years . “We will show them Our Signs in the universe, and in their own selves, until it becomes manifest to them that this (the Quran) is the truth” [Fussilat 41:53]kzread.info/dash/bejne/mKGKt9WNm5yrpLg.html

  • @robsmith1a
    @robsmith1a3 жыл бұрын

    The universe was smaller and hotter when it was young, weren't we all?

  • @windmillwilly

    @windmillwilly

    3 жыл бұрын

    Some people are minors

  • @calebj1442

    @calebj1442

    3 жыл бұрын

    Who else came back to see if just maybe it really was Robert James smith commenting on space time

  • @robsmith1a

    @robsmith1a

    3 жыл бұрын

    @@calebj1442 Unfortunately not, I really like The Cure though, maybe in a parallel universe?

  • @ElasticReality

    @ElasticReality

    3 жыл бұрын

    [*sigh*] [ *looks down with hands in pockets.*] [*Kicks dirt*] Yes.

  • @andreasimon2752

    @andreasimon2752

    3 жыл бұрын

    No doubt!!

  • @bariumselenided5152
    @bariumselenided51522 жыл бұрын

    Given how mind-glowingly far away galaxies are, I kinda like Kant’s characterization of them as island universes

  • @GameCyborgCh

    @GameCyborgCh

    2 жыл бұрын

    I mean those are just labels we give these constructs, it doesn't matter what we call it as long as everyone agrees and knows what it means

  • @yogi-man

    @yogi-man

    Жыл бұрын

    Exactly, but I do enjoy the poetic nature of the title Kant used

  • @taotaostrong
    @taotaostrong3 жыл бұрын

    Wow. I remember when it was only 13.7 Billion years old. They grow up so fast!

  • @JasonBairdDallas

    @JasonBairdDallas

    3 жыл бұрын

    They should admit this isnt real science.

  • @ObjectsInMotion

    @ObjectsInMotion

    3 жыл бұрын

    @@JasonBairdDallas You should admit you are not a real scientist.

  • @JasonBairdDallas

    @JasonBairdDallas

    3 жыл бұрын

    @@ObjectsInMotion neither was darwin

  • @ObjectsInMotion

    @ObjectsInMotion

    3 жыл бұрын

    @@JasonBairdDallas Hmm, made observations of the world around him and formulated a group of hypothesis to explain the underlying phenomena and then having those assumptions and conclusions rigorously tested and reproduced in a peer-reviewed process? Sounds like he was a scientist to me. In fact, sounds to me that you only think he wasn't because you disagree with what he thought. Now that's not science at all!

  • @JasonBairdDallas

    @JasonBairdDallas

    3 жыл бұрын

    @@ObjectsInMotion his ideas arent reproduceable nor observable. Poor Darwin didnt know anything about DNA nor molecular biology...his hypothesis is in question more and more among scientists who can think out of the box.

  • @andrewwright64
    @andrewwright643 жыл бұрын

    If we were to discover definitive proof that the universe were significantly older than we currently believe, which of our assertions about the universe would most likely be to blame for the miscalculation?

  • @MaderHaker

    @MaderHaker

    3 жыл бұрын

    Amazing question! Now I want to know too!

  • @TimRaySr

    @TimRaySr

    3 жыл бұрын

    That we were smart enough to sort it out in the first place? Just a guess mind you.

  • @ReligionlessFAITH

    @ReligionlessFAITH

    3 жыл бұрын

    Inverse of shortest is LONGEST Inverse of shortest measurable distance is LONGEST MEASURABLE DISTANCE Inverse Planck distance 1/10^-35m is 10^22light years - radius of universe from universal core singularity TOWARD which all the galaxies of our observable space accelerate - in a COMMON vector with starts of accelerations staggered by DELAY. Our probes reach out only 10^10light years - we've probed only 0.00000000000001% of universe - our observable space is 0.0000000000000001% of actual size of universe according to inverse Planck. Space can not be bent stretched or warped. It is already there wherever we'd like to bend stretch or warp it to - it is EVERYWHERE we have looked. Sir Hubble DID NOT endorse single-point expansion HALF THEORY - he knew Sir Newton would ask "Where is the equal and opposite COMPACTION that must necessarily accompany the alleged expansion? GRAVITY causes observations of RED SHIFT - we have PROOF.

  • @gene51231356

    @gene51231356

    3 жыл бұрын

    Possibly disagreement on the value of the Hubble's constant (Universe rate of expansion). PBS Space Time did a previous episode on this major unsolved cosmological problem that PBS called the "Crisis of Cosmology", where different measurement techniques produce different results, which are too different even after accounting for a margin of error. It could therefore mean not a measurement error but that our theory is incomplete, and any new theory could be significantly different to predict a change in the age of the Universe, since the age of the Universe is very much tied to the Hubble's constant. kzread.info/dash/bejne/aWaXr8F-ZsXZf9Y.html

  • @Dragrath1

    @Dragrath1

    3 жыл бұрын

    Hmm there is growing evidence that there is far more widespread peculiar velocities that might not cancel out based on surveys so I would bet on that throwing off the age of the universe though it would be hard to test as no one has solved the Einstein field equations for a universe where there is an initial directional bias in the structure of the Early universe. Personally as the evidence grows for quite different Hubble constants (and thus ages of the universe) depending on whether using the Early or modern Universe i.e. CMB and baryon acoustics etc give one age while Supernovae red giants and the like give another. If there was a small but nonzero bias then redshifts might differ based on the direction you look in a way that wouldn't cancel out by simply averaging galaxies equally to cancel their peculiar velocities at least not given the sample sizes of galaxies we have been able to observe so far where as methods based off the Early universe would have a far smaller bias or perhaps even no bias depending on the source of the discrepancy which would make their measurements far more accurate.. As the evidence from surveys build that some degree of asymmetry is real and not an observational bias (I'm skeptical about claims made above and beyond that) it seems most plausible that the local universe is just too asymmetric for the type of averaging used (and perhaps even the Friedman equations) to accurately estimate the expansion rate without accounting for the larger bulk flow within which we are embedded. I'm not convinced the universe is older than the CMB's estimate but if it is I would suspect that it would simply mean that a larger percentage of the CMB dipole was due to the asymmetric geometry of the universe rather than purely our galaxies peculiar velocity.

  • @OctorokSushi
    @OctorokSushi3 жыл бұрын

    I feel kinda cheesy making a comment like this because of course everyone appreciates these videos, but I do want to say thank you for taking the time to make these. Of course thank you to the awesome people supporting on Patreon too. Space stuff has always brightened my day and I feel like I've learned a lot from these videos, I really appreciate it.

  • @loturzelrestaurant

    @loturzelrestaurant

    2 жыл бұрын

    Anyone wants to check out some yet-unkown-to-him/her science-youtuber?

  • @AceOfSpadesX

    @AceOfSpadesX

    2 жыл бұрын

    @@loturzelrestaurant which one?

  • @neilsiebenthal9254

    @neilsiebenthal9254

    2 жыл бұрын

    @@loturzelrestaurant so long as it's not a creationism one.

  • @loturzelrestaurant

    @loturzelrestaurant

    2 жыл бұрын

    @@neilsiebenthal9254 Haha, yeah. You need to tell me though what you specifically seek, so i can do my best. And also clarify 'soft' science or 'hard' science, if you know what i mean with that.

  • @loturzelrestaurant

    @loturzelrestaurant

    2 жыл бұрын

    @@AceOfSpadesX How about making a playlist with videos of Sci Man Dan as well as PBS Space Time, where each next video is from the other channel, going back and fort and back and forth, so you have the best viewing-expereince?

  • @ikeekieeki
    @ikeekieeki3 жыл бұрын

    the history of things being named by those who intended to mock such things is wild

  • @12jswilson

    @12jswilson

    3 жыл бұрын

    Happens a lot in economics. "Capitalism" was a term coined by Karl Marx. Neoclassical Economics got its name from the Institutional economist Thorstein Veblen.

  • @ivanleon6164

    @ivanleon6164

    2 жыл бұрын

    Michelson-Morley agree.

  • @ThomasJr

    @ThomasJr

    2 жыл бұрын

    I agree

  • @Purriah
    @Purriah3 жыл бұрын

    1.99m subs. Almost to 2m! Congrats Matt, and everyone behind the scenes!

  • @BattousaiHBr

    @BattousaiHBr

    3 жыл бұрын

    huge gratz to the animators, phenomenal work.

  • @jacek5809

    @jacek5809

    3 жыл бұрын

    Yep and Matt has to drop the Tchaikovsky Violin Concerto. Or something like that.

  • @universemaps
    @universemaps3 жыл бұрын

    Thanks for using my image on the thumbnail! I'm glad it's useful! Awesome content PBS Space Time as always!

  • @alexandraciampi5312

    @alexandraciampi5312

    2 жыл бұрын

    Hmmm I'm curious bout this pic where can I see it better?

  • @Antares2
    @Antares23 жыл бұрын

    Easy: just cut the universe down and count the rings!

  • @chilaphoi

    @chilaphoi

    2 жыл бұрын

    No just ask the universe how old it is haha 😂

  • @ingonagel7169

    @ingonagel7169

    2 жыл бұрын

    Really easy... first take the bones of the fifth elefant, then weld an age in mordor, and then cut Yggdrasil. Take a vacation on Mount Graham. And start counting.... start at 1 and don't miss out on 4 do not stop at 3 but if you go to far... Enjoy

  • @nathankiefer9323

    @nathankiefer9323

    2 жыл бұрын

    "Laughs in Norse mythology"

  • @nathanielgrey4091

    @nathanielgrey4091

    2 жыл бұрын

    @@chilaphoi That doesn't work on the internet. Trust me.

  • @benedictifye

    @benedictifye

    2 жыл бұрын

    You will need a large saw

  • @paulpeterson4216
    @paulpeterson42163 жыл бұрын

    Speaking about the history of the universe, Matt O'Dowd says "Long story short." Got to love the way he just leaves irony on the floor waiting for someone to pick it up.

  • @connorm3436
    @connorm34363 жыл бұрын

    Could you guys do an episode on the nature of time, and the theories about it? Love from Australia, hope you are staying safe Matt.

  • @jackalvarez7428

    @jackalvarez7428

    3 жыл бұрын

    Also go take a look at some of Sean Carrolls videos and lectures

  • @Andrew-yi4sb

    @Andrew-yi4sb

    3 жыл бұрын

    If you are looking for some extra reading, I would recommend “About Time” by Paul Davies

  • @comancess4639

    @comancess4639

    3 жыл бұрын

    No, how about an episode on Australia. Love from Time

  • @thhseeking

    @thhseeking

    3 жыл бұрын

    "Time is an illusion. Lunch-time doubly so." - Douglas Adams.

  • @Marleystrummer

    @Marleystrummer

    3 жыл бұрын

    Kiaora from Aotearoa bro, be cool if they open up the Australasian bubble, we need the tourism 👍

  • @larryfulkerson4505
    @larryfulkerson45053 жыл бұрын

    if the human race ever does get to be space fairing and be able to visit other worlds, let's just make patterns in their crops and leave.

  • @Dontreallycare5

    @Dontreallycare5

    3 жыл бұрын

    Crop circles are how you know aliens are highly ethical. They never appear in places where food is scare, or has a good chance to become scarce.

  • @khatharrmalkavian3306

    @khatharrmalkavian3306

    3 жыл бұрын

    TFW we meet aliens for the first time and learn that their genitals look like crop circles...

  • @guytech7310

    @guytech7310

    3 жыл бұрын

    Nah, leave a black obelisk with no writing, & no tool marks.

  • @scaper8

    @scaper8

    3 жыл бұрын

    And when the planets that we did it to gain intersellar travel themselves we'll tell them, "When we we younf, some dicks did it to us. We're just gettin' 'em back." And the universal cycle of pointless vengeance will remain unbroken. Kind of beautiful in its own way.

  • @MouseGoat

    @MouseGoat

    3 жыл бұрын

    I mean it is possible that taking live stuck make marks on fields is like the same as putting microchips on animals or catching som to test how they doing in the wild. Like we here going "OMG what dose it mean, what they trying to say" and tay like "only mild signs of pollution from the old gelatik explosion , lokal life forms looks well, off to next plant. (writing this made me realise another reason the idea of "the day the earth stood still" is such a ludicrous dumb idea, there's no reason to think aliens would give a crap about our population or state of life on this planet, an there could out here trying to clean up there own pollution we don't even realise is here, just like turtles in the ocean don't get what plastic pollution is or were its coming from. wouldn't it be ironic if we were like theis lifeforms that had somehow survived in a weird aftermath of a big alien disaster. it could explain why Mars and Venus is gone why we seem to be alone in the galaxy, alins a like; holyshit look at theis weird life forms triving where no life should be able to live.)

  • @ytilaeR_
    @ytilaeR_3 жыл бұрын

    Not only is this the best channel on youtube, but It has one of the funniest and most thought provoking comment sections on the site.

  • @gagginglemer1
    @gagginglemer13 жыл бұрын

    One of the first episodes in a long time I /think/ I actually understand after a single watch... when I watch it a second time I'll realize it's all going over my head.

  • @loturzelrestaurant

    @loturzelrestaurant

    2 жыл бұрын

    Anyone wants to check out some yet-unkown-to-him/her science-youtuber?

  • @SpittinSquirell
    @SpittinSquirell3 жыл бұрын

    Thank you Matt and PBS Spacetime for bringing some relief during the pandemic. I always look forward to your videos

  • @theotheremily
    @theotheremily3 жыл бұрын

    I just want to take a moment and thank PBS Space Time for not putting 5+ ads within one video like a lot of other KZreadrs.

  • @useodyseeorbitchute9450

    @useodyseeorbitchute9450

    3 жыл бұрын

    Use uBlock or just install Brave browser to block adds.

  • @theotheremily

    @theotheremily

    3 жыл бұрын

    I use the app on my phone, besides, I have a way around the ads. It's just super annoying and scummy when people do that

  • @kagannasuhbeyoglu
    @kagannasuhbeyoglu3 жыл бұрын

    as always gorgeous, thank you PBS👍

  • @theemissary1313
    @theemissary13132 жыл бұрын

    Rewatching this over a year later because obviously and i still would love to be able to paint like the beautiful background there. Genuine reason i miss lockdown is not seeing this in newer videos.

  • @DeGebraaideHaan
    @DeGebraaideHaan3 жыл бұрын

    How We Know The Universe is Ancient... Just look at the greyness and greatness of Matt's beard.

  • @HebaruSan
    @HebaruSan3 жыл бұрын

    "Vesto Slipher" is an amazing name.

  • @TheExoplanetsChannel

    @TheExoplanetsChannel

    3 жыл бұрын

    Yes

  • @laurentcohen7589

    @laurentcohen7589

    3 жыл бұрын

    he added melvin to hide his extraterrestrial origins

  • @gdwnet
    @gdwnet3 жыл бұрын

    I wish I could like more than once. This deserves a like for the content, for the Q&A and, of course for Simone. gorgeous kitty!

  • @marksharp6266
    @marksharp62663 жыл бұрын

    Hey! I really love your videos. They help me understand so much that my college doesn't have time to cover in our classes. I'm trying to write a paper based on some things I have learned in other videos, and I was wondering if you guys kept track of your sources for these different videos? i am trying to dive a little deeper into some of the content, and I want some more sources for my paper.

  • @aliteralparadox5998
    @aliteralparadox59983 жыл бұрын

    i feel like matt is talking to a ghost that is behind me

  • @dharmeshsolanki4354

    @dharmeshsolanki4354

    3 жыл бұрын

    i think he is reading a script at right side of the camera 😂 it feels really weird when someone is talking to you and not looking at your eyes 😂

  • @fupopanda

    @fupopanda

    3 жыл бұрын

    @@dharmeshsolanki4354 His eyes fells like it's looking right at me. Which video did you watch? I think the original comment is trying to make a different point in a clever way.

  • @Waters92

    @Waters92

    3 жыл бұрын

    Trust me I see it too. It's so subtle and I know he can't help it with this setup, but so noticeable once you see.

  • @jimboAndersenReviews

    @jimboAndersenReviews

    3 жыл бұрын

    Behind you in space, or in time?

  • @edoardoruggeri1

    @edoardoruggeri1

    3 жыл бұрын

    @@fupopanda it's definitely there. His eyes are looking very slightly to your right, as if he was looking at your right ear and not yiur eyes.

  • @bastawa
    @bastawa3 жыл бұрын

    this is such a positive show... maybe there’s a hope for humanity

  • @BlackRose-ny3zh

    @BlackRose-ny3zh

    3 жыл бұрын

    Oh there's hope... Definitely

  • @tantrispicks2440

    @tantrispicks2440

    3 жыл бұрын

    @Zord90 My atoms are getting ripped right now and it's not so bad, so don't worry

  • @milolee4746

    @milolee4746

    3 жыл бұрын

    Hope?...CCP virus....hold my beer.

  • @erins.5420

    @erins.5420

    3 жыл бұрын

    Hope, does anyone even consider the last 10k years scientists say we’ve been modern and what humanity has been through during that time? We have more than hope. We have 24 hours in a day, 365 days in a year to live life no matter how difficult and the choice to make the best of it or focus on when the last tick on our individual clock will be.

  • @patrikpass2962

    @patrikpass2962

    3 жыл бұрын

    Doomsday prophecies going strong in science communities. Strange.

  • @venture3800
    @venture38003 жыл бұрын

    I've heard all of this stuff before but I love the way matt explains things I'd watch him explain anything I swear

  • @Jawnderlust
    @Jawnderlust3 жыл бұрын

    These are the still best videos on KZread. Thanks for all the hard work errbody.

  • @TheExoplanetsChannel
    @TheExoplanetsChannel3 жыл бұрын

    Congrats in advance for reaching *2 million subscribers*

  • @Lirky77
    @Lirky773 жыл бұрын

    Well, I got to know this channel maybe a couple of weeks ago. It is an amazing one and reminds me that I could be there understanding fully all notes if I had chosen a different carrier path. But still, great way of sharing knowledge to all. I will probably watch all back from the start of your playlists one day. Thumbs up!

  • @loturzelrestaurant

    @loturzelrestaurant

    2 жыл бұрын

    Why not try new youtubers though? How about Veritasium and Sci Man Dan for the start and you come back later for more?

  • @Lirky77

    @Lirky77

    2 жыл бұрын

    @@loturzelrestaurant Ah, I did find Sci Man Dan in the meantime and i'm following it. I guess the main issue is always time. When you're a father of two kids, working a lot, time is a rarity. But hey, 20 years ago we would have dreamed for the internet to rise to be a place of knowledge with such videos, so I am quite happy.

  • @loturzelrestaurant

    @loturzelrestaurant

    2 жыл бұрын

    @@Lirky77 Totally understandable. ...But... may i make a suggestion? ...Sell your 2 kids... and you have 2 kids less... Mhahahahaha.

  • @crystaldazz
    @crystaldazz3 жыл бұрын

    You know, I don't under 90% of the stuff on this channel, but I love it, and I feel a tiny bit wiser every time I watch it. Love you guys.

  • @VaughanMcAlley
    @VaughanMcAlley3 жыл бұрын

    Probably my favourite moment from back in the day when Adam Spencer & Wil Anderson did breakfast radio: Adam: The universe is 13.8 billion years old. Wil: *sings* Happy birthday to you, happy birthday to you… should we get it a present? Adam: What do you get the universe that has everything?

  • @ravenlord4
    @ravenlord43 жыл бұрын

    Still having trouble reconciling "the universe is infinite in size" and "the universe has a finite age". Especially if the universe started from a singularity. Going from infinity small to infinitely large in a moment of planck time queues the meme "well, that escalated quickly." :)

  • @cavalrycome

    @cavalrycome

    3 жыл бұрын

    The observable part of the universe is finite, the part of it that light has had time to reach us from. We don't know how much more of it there is beyond that, so there is no consensus about whether "the universe is infinite in size".

  • @Cerevisi

    @Cerevisi

    3 жыл бұрын

    Well that 'inflated' quickly...

  • @iambiggus

    @iambiggus

    3 жыл бұрын

    @@Mosern1977 Speak for yourself.

  • @robinsuj

    @robinsuj

    3 жыл бұрын

    The fact that it was a singularity doesn't necessarily imply that it was infinitely small ;) It just means that its density was infinite.

  • @agargamer6759

    @agargamer6759

    3 жыл бұрын

    The universe didn't start as an infinitesimal point or a singularity, it's just the observable universe (which is definitely finite) that was really small at the time of the "big bang". There's a great minutephysics video (kzread.info/dash/bejne/o2eBubSvfNHKqtY.html) on it, where Henry argues that it should be called the "Everywhere Stretch" rather than the Big Bang because it leads to fewer misconceptions of the theory.

  • @kfjw
    @kfjw3 жыл бұрын

    "Vesto Slipher" sounds like a supervillain name.

  • @georgehugh3455
    @georgehugh34553 жыл бұрын

    _"How do you learn the age of the universe when there's no trace left of its beginnings?"_ *You count the Birthday Candles!*

  • @phantomwalker8251

    @phantomwalker8251

    3 жыл бұрын

    they have no idea on anything they talk about. next time your at the beach,pic a grain of sand,name it earth,then drop it..that,is where we are.& what we know, NOTHING.

  • @dracolique

    @dracolique

    3 жыл бұрын

    walker lol. You seem mad. The pursuit of knowledge angers you. How interesting.

  • @lalipop241
    @lalipop2413 жыл бұрын

    I love your youtube chanel, keep up this brilliant work. Space videos are my way to escape from daily life.

  • @astrognosis

    @astrognosis

    3 жыл бұрын

    Allah says in the holy Quran - We created the heavens and the earth and all between them in Six Days, (50:38) and also in chapter 41 , verse 10 And He placed on the earth firmly set mountains over its surface, and He blessed it and determined therein its [creatures'] sustenance in _four days_ without distinction - for [the information] of those who ask. in these two verse Allah says that he created universe in 6 days and then he created earth on the 4th day , which is 2/3 of 6 days. also earth was formed about 4.6 billion years ago , when the universe was about 2/3 of its present age. if we divide the age of universe into 6 parts , than this 1 day would be equal to about 2.3 billion years , and when the universe was 4 days old The God created the earth ,thats is the universe's age is 9.2 billion years old (2.3×4=9.2) ....also 2.3 billion year old= 1st day 4.6 billion year old= 2nd day 6.9 billion year old= 3rd day 9.2 billion year old=4th day, earth is created 11.5 billion year old= 5th day 13.8 billion year old= 6th day , present. The Quran exactly presents that the earth was formed (4.6 billion yrs ago)when the universe was about 9.2 billion years . “We will show them Our Signs in the universe, and in their own selves, until it becomes manifest to them that this (the Quran) is the truth” [Fussilat 41:53]kzread.info/dash/bejne/mKGKt9WNm5yrpLg.html

  • @Mrmder
    @Mrmder3 жыл бұрын

    I can't thank you enough for helping me (sort of) understand these things. I was late to the space nerd party, but i'm damn happy to be here now. The excitement i feel about the James Webb launch is almost too much. What amazing new things will we discover?!

  • @adwans1491

    @adwans1491

    3 жыл бұрын

    We will See alot of emptiness

  • @Mrmder

    @Mrmder

    3 жыл бұрын

    @@adwans1491 the best kind of emptiness!

  • @Valdagast
    @Valdagast3 жыл бұрын

    So if the universe is precisely 13,8 billion years old, does that mean that the Universe began on a Monday?

  • @metalcake2288

    @metalcake2288

    3 жыл бұрын

    That's illegal

  • @addajjalsonofallah6217

    @addajjalsonofallah6217

    3 жыл бұрын

    Probably Saturday

  • @arekwittbrodt

    @arekwittbrodt

    3 жыл бұрын

    That would actually explain many things ;-)

  • @TimRaySr

    @TimRaySr

    3 жыл бұрын

    Yeah It was a Monday but it waited till 8:45 to get started; so freakin' typical!

  • @EgonSorensen

    @EgonSorensen

    3 жыл бұрын

    Friday the 13,∞'th Edit - ermm.. Actually, 1.38^tenth to be more Matt precise 🥰

  • @thepruthvi007
    @thepruthvi0073 жыл бұрын

    I was watching the series of videos on string theory and related stuff and found the concepts are explained as best as they can be in layman's terms! One other project I was fascinated by when I was exploring the modern physics landscape was The Amplituhedron project of Nima Arkani Hamed. It would be great if you could do a video on that in the future! Would love to learn more on that.

  • @loturzelrestaurant

    @loturzelrestaurant

    2 жыл бұрын

    Cool, but what about 'Team Science'? Will that be a thing? Fighting Anti-Science? Joining the Flat-Earth-Debunkers who have a Blast laughing about flat-earth-conspiracys and such, while also explaining stuff for those that wondered about these things? Pseudoscience and its cousins are a big social problem and Education needs

  • @mjaerkens
    @mjaerkens3 жыл бұрын

    Hey man, was really cool seeing you in the latest season of How The Universe Works!

  • @TheExoplanetsChannel
    @TheExoplanetsChannel3 жыл бұрын

    Great video. The difference between a type 0 and a type 3 civilization has been estimated to be 1 million years. It is is amazing to think that an alien civilization that appeared just 1 million years earlier than humanity, may now have the resources to visit us.

  • @nicolepinkston7003

    @nicolepinkston7003

    3 жыл бұрын

    Why?

  • @erik-ic3tp

    @erik-ic3tp

    3 жыл бұрын

    And how about 1 billion years and even 1 trillion years? :)

  • @lifeisfunyeay1937

    @lifeisfunyeay1937

    Жыл бұрын

    In a few centuries all the useful resources on earth will be depleted, that doesn’t leave us much time to build spaceship and colonize our solar system. That’s if we don’t destroy the human civilizations first. That’s a major problem that any advanced civilizations would have to face, resources depletion on their home planet because of overgrowing population, wars, pollution etc

  • @sam08g16
    @sam08g163 жыл бұрын

    When James Webb is launched in 2050 this number might change again

  • @Ole_Rasmussen

    @Ole_Rasmussen

    3 жыл бұрын

    The world will sink into climate related garbage before then, and the launch might never happen.

  • @TimRaySr

    @TimRaySr

    3 жыл бұрын

    Lol! I want my flying car and cold fusion generators first! The James Web is a recent promise. You have to get in line!

  • @theapocilip

    @theapocilip

    3 жыл бұрын

    2050? Hopefully a little sooner lol

  • @red-.-red

    @red-.-red

    3 жыл бұрын

    2050? You're being optimistic.

  • @garypalmer997

    @garypalmer997

    3 жыл бұрын

    It already has (13:30) m.kzread.info/dash/bejne/aWeOus2YeZzOZdY.html#searching

  • @dream.machine
    @dream.machine3 жыл бұрын

    Congratulations on 2 million Subscribers!

  • @arindampaul6828
    @arindampaul68283 жыл бұрын

    Actually that's the question I have since beginning ,, thanks PBS Space time ....Your video's r quite fascinating for Physics lovers....wow!!

  • @UltimateTobi
    @UltimateTobi3 жыл бұрын

    Just wanted to drop a comment saying "Thank You!" for such nice and educating videos.

  • @Martin-tb4oo
    @Martin-tb4oo3 жыл бұрын

    This guy would have to be amazing to get into a conversation with!

  • @jdubb4589

    @jdubb4589

    3 жыл бұрын

    Facts!

  • @Legio__X
    @Legio__X3 жыл бұрын

    No ads. Thumbs up 👍🏻

  • @gregfelice1969
    @gregfelice19693 жыл бұрын

    Big set lighting improvement, kudos

  • @Sventimir
    @Sventimir3 жыл бұрын

    I'm curious about the CMB map. I have seen it many times before and have always wondered, how it is oriented? I assume it is a projection of the celestial sphere analogous to maps of Earth, right? But where is the north and south on the sky? The stars (and also regions of universe containing them) visible from Earth are different, depending on the place on the Earth's surface, current time of day and of year. There are also no other good reference points, since everything is constantly moving with regard to everything else. Then how do you even go about orienting the CMB map, or any map of the sky for that matter? Do you pick a particular time of day and year, a particular location on Earth, and just ignore miniscule year-to-year differences, or is there some other trick behind it?

  • @PaulPaulPaulson

    @PaulPaulPaulson

    3 жыл бұрын

    I have the right video for you: kzread.info/dash/bejne/ZminxayrfLeco6g.html "Which way is up in space" from DeepSkyVideos with Dr Meghan Gray. It's a side topic of talking about M53, which is also interesting. Short answer: Common reference coordinate systems are the ones oriented along the rotation axis of * earth * the solar system * the milky way In that order, usefulness increases with distance of the observed object.

  • @Sventimir

    @Sventimir

    3 жыл бұрын

    That's perfect, thank you both!

  • @jhonandrewsantos4672
    @jhonandrewsantos46723 жыл бұрын

    Can a galaxy be so redshifted that the light it emits arrives to us in radio frequency?

  • @wdbressl

    @wdbressl

    3 жыл бұрын

    I don’t think so but there are galaxies red shifted below the vision of Hubble, that is what the James Webb telescope is supposed to see.

  • @aj4138

    @aj4138

    3 жыл бұрын

    Interesting question

  • @garethdean6382

    @garethdean6382

    3 жыл бұрын

    No. The most distant light we know of is the CMB, which has been redshifted from visible to microwave. This light was emitted before galaxies had formed. There ARE galaxies so redshifted that their light peaks in the infrared however. It should also be noted that galaxies emit a whole spectrum of light, so that their UV or x-ray emissions may be redshifted *into* the visible spectrum.

  • @Willaev

    @Willaev

    3 жыл бұрын

    In the future this will happen.

  • @hammondsmucker

    @hammondsmucker

    3 жыл бұрын

    Ya dude

  • @josharchibald4637
    @josharchibald4637 Жыл бұрын

    So a number of things occur to me after watching this video. 1. Seeing the ways that people in the past have theorized and observed the universe is always kind of amazing to me. It's easy to forget that grand ideas and theories are often just an amalgamation of smaller observances of the past. It's humbling. No matter how much you learn/know, perspective is just as important. 2. The Big bang theory is effectively built in a kind of chain of observations and discoveries. If any of these observances or discoveries turn out to be wrong then the chain breaks. Not necessarily the whole chain however. The further back in the chain a hypothetical link breaks the more hypothetical damage could be done to the theory itself. 3. this is kind of an expansion on thought number 2. All of this information has been obtained by looking up and scribbling numbers. it's amazing. With the new Webb telescope in orbit we're going to be learning mind blowing discoveries and seeing that certain assumptions were wrong. This could be relatively small things or they could be game changers in terms of grand theories. We might make discoveries that definitely prove the General Relativity, Quantum theory, or even disprove the both of them somehow. Just as perspective is so important to discovery, so is clarity. The Webb telescope is effectively our next step in both clarity and perspective. I wonder how much of our current understanding will change, expand, and/or collapse. 4. Final note. It was kind of just thrown in there but I have to point out what I see as a totally inane point. When it was mentioned that he Pope saw the Big Bang as evidence for Creation the host narrator also mentioned Maitre's point. Which was along the lines of the Big Bang being beyond any metaphysical understanding. what a ridiculously inane and highly erroneous statement. Whether or not I believe in a hypothetical religion or Creation of any kind will be kept secret, because I feel it's of no importance. My bugbear with his statement is purely in it's logic. The Big bang being a product of an all powerful entity snapping their cosmic fingers seems just as likely as the work of quantum forces spontaneously creating the world. Making an absolute statement about it's place in the universe is totally narrow-minded and quite stupid. It has been said that these two things need not even be separate ideas. That both could easily be true at the same time. Not sure how I feel about it but I find the argument quite compelling. Is it possible, I wonder, for a phenomenon to be both totally scientific and natural while also being supernatural and metaphysical? Are we, as a society, pushing a paradigm of opposing binary perspectives where a binary need not exist? Something the chew on. I certainly do not have the answer.

  • @olivercharles2930

    @olivercharles2930

    10 ай бұрын

    4. Is a stupid point to make.

  • @bazoo513
    @bazoo513 Жыл бұрын

    ~ 13:30 - A.k.a. "crisis in cosmology" - confidence intervals of those different methods don't overlap. But I am sure you made an episode on thet, too, in the meantime.

  • @JonoSSD
    @JonoSSD3 жыл бұрын

    A few years ago I asked the question that this episode brilliantly answers. Now, I have a follow-up: do we know if dark energy has remained the way it is since the beginning? If it hasn't, do we know when it "took over" and how would that influence the age calculation of the universe? Could our lack of understanding about dark matter and dark energy throw these calculations off? By how much?

  • @1Fracino

    @1Fracino

    3 жыл бұрын

    That is a really good question, I hope they see it and give us an answer ! :)

  • @danieljensen2626

    @danieljensen2626

    3 жыл бұрын

    I'm not an expert, but following this stuff is a hobby of mine so I'll answer to the best of my knowledge. I'm pretty sure the dark energy situation had to be different at the time of cosmic inflation. The assumption is that it has stayed the same since then because there isn't really evidence to the contrary, but I wouldn't say we really know. Inflation is ultra early so anything before that doesn't really matter, but if dark energy has changed since then I think it could totally throw our off by estimates a lot. In fact non-constant dark energy is one possible estimate for recent discrepancies in calculation the Hubble constant. Although I don't actually know how popular that explanation is among experts.

  • @Willaev

    @Willaev

    3 жыл бұрын

    Dark energy was not the dominant force early in the universe, gravity was. That’s why there was a slowing down of the rate of expansion billions of years ago. But as the universe expanded, the amount of dark energy grew until it overcame gravity as the dominant force, and that’s when the expansion rate started to accelerate again. He covered it in a video some time ago.

  • @unvergebeneid
    @unvergebeneid3 жыл бұрын

    Is there still a recording of that programme in which the term "Big Bang" was coined? It's kind of a historic moment, isn't it?

  • @BIindsid3

    @BIindsid3

    3 жыл бұрын

    Pretty sure it was started as a slander by Fred Hoyle. from wiki: "in particular his rejection of the "Big Bang" theory, a term coined by him on BBC radio, and his promotion of panspermia as the origin of life on Earth."

  • @fillemptytummy

    @fillemptytummy

    3 жыл бұрын

    The radio waves are still traveling away from Earth, get in the wormhole and bring your wireless.

  • @michaelsommers2356

    @michaelsommers2356

    3 жыл бұрын

    I don't know if they still exist, but I would guess not. If the BBC would erase Dr. Who, there is no barbarity that is beyond them. However, the lectures were published in _The Listener,_ the Beeb's magazine, and also in a book. See academic.oup.com/astrogeo/article/54/2/2.28/302975

  • @MouseGoat

    @MouseGoat

    3 жыл бұрын

    @@fillemptytummy I dont think you need a wormhole, you could just travel after them, maybe you could catch some of them bouncing back from a interstella object, or find some stuck around a black hole ^^

  • @unvergebeneid

    @unvergebeneid

    3 жыл бұрын

    @@michaelsommers2356 Thanks! Yeah, I also did a bit of research and saw that it was printed. But it would've been great to actually _hear_ the first time someone called it the "big bang."

  • @theklaus7436
    @theklaus74363 жыл бұрын

    Your do such an amazing job. Thank you

  • @darksoul479
    @darksoul4793 жыл бұрын

    This is really a great video. Well done.

  • @maisiesummers42
    @maisiesummers423 жыл бұрын

    Confirmed: cats know way more about quantum space than we do.

  • @tantrispicks2440

    @tantrispicks2440

    3 жыл бұрын

    And gravity, for that matter.

  • @viveklakshman2897

    @viveklakshman2897

    3 жыл бұрын

    Yes. Like knowing the secrets to be both dead and alive at the same time!

  • @suprafluid3661

    @suprafluid3661

    3 жыл бұрын

    Bad Joke Police here (BJP)

  • @istvansipos9940

    @istvansipos9940

    3 жыл бұрын

    yes. we kan quantum purrfectly. we just not tell yoo. and me food is fuynally heer so I giv da laptop back to me human naw.

  • @curtishollerback6707

    @curtishollerback6707

    3 жыл бұрын

    My cat knows how to walk in the same place in the same second as I do! He is smart!

  • @liondoor4554
    @liondoor45543 жыл бұрын

    •Watching PBS space-time: FREE (or for contributors, the amount that you contribute ;-) •Seeing an astrophysicist calm & coddle his kitty: PRICELESS

  • @MirceaKitsune
    @MirceaKitsune3 жыл бұрын

    Radu Negulescu? Weee, a fellow Romanian is supporting PBS Space Time!

  • @TamarZiri
    @TamarZiri3 жыл бұрын

    Simon is why I subscribed.

  • @thelastdruidofscotland
    @thelastdruidofscotland3 жыл бұрын

    I tend to think the Universe is incredibly young, compared to its expected lifespan of trillions of years.

  • @78anurag

    @78anurag

    2 жыл бұрын

    But most of it is going to be a cold, dark and empty place with black holes being the only things to exist.

  • @GameCyborgCh

    @GameCyborgCh

    2 жыл бұрын

    Red dwarfs will burn for trillions of years. Any black hole will make even that look like a second

  • @Yohshidogg
    @Yohshidogg3 жыл бұрын

    I need a shirt like that one.

  • @_twig.ai__
    @_twig.ai__3 жыл бұрын

    Can you guys do an episode on Superluminal communication or faster than light communication? Real time interplanetary communication? Through worm holes or quantum entanglement or quantum locality?

  • @leerv.
    @leerv.3 жыл бұрын

    That zoom in to the stars in Andromeda, combined with thinking about the distances between any of those stars, makes me feel so, so, small. I don't think I can handle considering that that ratio doesn't begin to cover my actual size in comparison to the universe. Am I even equivalent to a quark in all of this? A self-aware quark, thinking itself special? And then 11:39 came..

  • @radishpineapple74
    @radishpineapple743 жыл бұрын

    It's truly remarkable how you can still produce this high-quality content, even during the pandemic. It even has the same high-quality animations! That's far better than what much of mainstream media has been able to do. Everyone at PBS Space Time should be proud of what they've been able to accomplish during these trying times.

  • @omuribep
    @omuribep3 жыл бұрын

    Seriously, thanks a lot for making those educational videos. This is one of the best of its kind.

  • @user-nb7qi2sc8i
    @user-nb7qi2sc8i3 жыл бұрын

    Nice I always pondored about this

  • @MrJballn
    @MrJballn3 жыл бұрын

    The T-Shirt! "Morty, there is literally EVERYTHING in space!"

  • @flashgordon3715
    @flashgordon37153 жыл бұрын

    Ask Simone the cat, cats can move between universe's to get in and out of rooms or even the house

  • @andreasimon2752

    @andreasimon2752

    3 жыл бұрын

    My cat is named Simon Hes amazing

  • @user-nb7qi2sc8i

    @user-nb7qi2sc8i

    3 жыл бұрын

    @@andreasimon2752 your surname is sinon

  • @bingosunnoon9341
    @bingosunnoon93413 жыл бұрын

    The universe was four billion years old when I was in grade school. I hope to see my ten billionth birthday soon.

  • @vincentkinequon4631
    @vincentkinequon4631Ай бұрын

    I wonder if time stops at the beginning of the big bang. Trying to understand this relativisticly is a mind blower to me.😊

  • @LOKJAV
    @LOKJAV3 жыл бұрын

    Somehow I read the title "How we know the universe is an accident"

  • @arvindraghavan403

    @arvindraghavan403

    3 жыл бұрын

    Papa universe wanted a quike

  • @phantomwalker8251

    @phantomwalker8251

    3 жыл бұрын

    correct the first time,,we were an engineered accident..or we wouldnt be here.

  • @Sothas

    @Sothas

    2 жыл бұрын

    That's ok, I read accent and now I wanna know what accent it has.

  • @wasimshaikh1665
    @wasimshaikh16653 жыл бұрын

    Everyone: We know everything there is to be known about Universe Hubble: Hold my telescope

  • @JasonBairdDallas

    @JasonBairdDallas

    3 жыл бұрын

    Atheists have explored nothing but claim God doesnt exist.

  • @azwris

    @azwris

    3 жыл бұрын

    @@JasonBairdDallas irrelevant..

  • @JasonBairdDallas

    @JasonBairdDallas

    3 жыл бұрын

    @@azwris Having a world view that skews your view of the world directly affects science

  • @davidsharounoff8521
    @davidsharounoff85213 жыл бұрын

    Matt O'Dowd, the man about space.

  • @golfhk
    @golfhk3 жыл бұрын

    I think this background is great 👍🏻

  • @edvolve
    @edvolve3 жыл бұрын

    How does the current "crisis in cosmology" inform the age of the universe? I was surprised to hear Matt say "precise age" a couple times when describing the 13.8 billion year old universe. Doesn't our understanding of the age lean heavily on whether the supernova data or CMB data or neither or another are the more true measure used to derive the Hubble Constant? Just looking for a little clarity. I know Matt is well aware of all this and would love to be set straight in my head about whether I should be thinking "precise" or "up in the air" when I hear 13.8 billion. Thanks

  • @ungaa_bungaa4684

    @ungaa_bungaa4684

    Жыл бұрын

    I wanted a little clarity too, but no one put an answer tho ):

  • @muhammadaryawicaksono4232
    @muhammadaryawicaksono42323 жыл бұрын

    12:45 "... when the universe was much smaller and much hotter ..." ( ͡° ͜ʖ ͡°)

  • @rhisavbora2975

    @rhisavbora2975

    3 жыл бұрын

    I love bigger and hotter😏

  • @biqstan09

    @biqstan09

    3 жыл бұрын

    @@eclipse369. Like his wife indeed 😈.

  • @ViAikBreeck

    @ViAikBreeck

    3 жыл бұрын

    Lolice here, open up

  • @tr1084

    @tr1084

    3 жыл бұрын

    Universe? Buddy, that's my wife.

  • @Nathan-vt1jz
    @Nathan-vt1jz29 күн бұрын

    The hardest part for me to conceptualize is cosmic inflation - even more than the size of the universe it’s hard for me to comprehend it getting larger as there’s nothing outside it (not just the observable, but total universe). The CMB makes sense and is powerful evidence for a whole host of theories.

  • @samhall4117
    @samhall41173 жыл бұрын

    I like to think of the Internet in geological terms. One day someone will be able to look back and see this interesting layer in the upload dates where we met every KZreadr’s cat.

  • @KuruGDI
    @KuruGDI3 жыл бұрын

    Did you ever try to put that kitty into a box with a contraption that will kill it when a radioactive particle decays?

  • @jessecoleman9226

    @jessecoleman9226

    3 жыл бұрын

    That's when they invented the microwave.they went on to use it for communication then on human's then food in cardboard boxes. Circle of life.

  • @razzerjr100
    @razzerjr1003 жыл бұрын

    Would we ever be able to harness heat energy from quantum fluctuations? As the energy can never reach abosoulute zero, isn't there always energy there to harness from nothing?

  • @garethdean6382

    @garethdean6382

    3 жыл бұрын

    Well there's two problems. The first is that we don't just need energy, we need an energy *gradient*. To have a fire you don't just need fuel, you need something to burn it. Specifically in this case we need a 'heat sink' that's lower energy than the fluctuations. But this gets to the second problem, by definition those fluctuations are the lowest possible energy level. As you yourself note they can NEVER reach absolute zero so there's no lower energy 'sink' we can use to extract energy.

  • @unom9515
    @unom95153 жыл бұрын

    Noroc de tine Radule, că altfel ne uitam la cai verzi pe pereții... 🌌Spațiu-timpului.

  • @bryancooper5180
    @bryancooper51803 жыл бұрын

    I have noticed that when it comes to really complicated subjects, if that subject matter is wholly understood by the teacher, you will come away learning something of intrinsic value. Honestly, I can't think of one thing I took away from this video that gave me a better idea on how to understand the age of the universe and how we go about calculating it. The commentator seems like a really nice guy and I'm sure he's very intelligent but even when speaking simply and slowly the information just did not seem to come together in a fashion that rings the bell of simple truth and logic.

  • @CommodoreFloopjack78
    @CommodoreFloopjack783 жыл бұрын

    Just wait for the day that everything we think we know now is chucked right out the galactic window.

  • @insulated_unit

    @insulated_unit

    3 жыл бұрын

    Tarbosh D'Artagnan IV That May or May not happen when and if the James Webb telescope goes on line.

  • @ctrockstar7168

    @ctrockstar7168

    3 жыл бұрын

    Like “scientists” would allow new evidence to change the “facts”

  • @JasonBairdDallas

    @JasonBairdDallas

    3 жыл бұрын

    This speculation passed off as science is like a religion.

  • @RedRocket4000

    @RedRocket4000

    3 жыл бұрын

    @@ctrockstar7168 LOL on a video that just gave the history of scientists allowing new evidence to change ideas.

  • @langtonmwanza6689
    @langtonmwanza66893 жыл бұрын

    Did I just hear the coolest science guy on youtube say Lala Fafa, im actually dead

  • @kingsize127
    @kingsize1274 ай бұрын

    Glad to hear you talk about Dr. Sandage, my distant cousin.

  • @gamzeeee6359
    @gamzeeee63592 жыл бұрын

    Çok faydalı bilgiler var. Teşekkür ediyorum size

  • @FCHenchy
    @FCHenchy3 жыл бұрын

    "Vesto Slipher", isn't that a Yu-gi-oh character?

  • @TheExoplanetsChannel

    @TheExoplanetsChannel

    3 жыл бұрын

    Oh

  • @tracyh5751

    @tracyh5751

    3 жыл бұрын

    I was looking for this comment.

  • @semaj_5022

    @semaj_5022

    3 жыл бұрын

    That and Tycho Brahe are two of the greatest names ever

  • @devilisahomo

    @devilisahomo

    3 жыл бұрын

    Yeah NASA is creative with the science fiction bs they're feeding you morons. I'm so disappointed at the gullibility of 90% of you who fall for this imaginary nonsense which doesnt have a basis in reality. Re-watch the video and play spot the science fiction. Pay attention to the hilarious but smart integration of made up non verifiable data which is then related to something like a scientist, which in turn instils belief that it's real and believable science. If you're thinking I'm wrong or if my statement illicits an emotional response then you're most likely not intelligent enough to see the deception. If you do see it then well done and you're well on your way to see hundreds of other sneaky manipulative tactics used by NASA to promote science fiction bs.

  • @pabloramos1022
    @pabloramos10223 жыл бұрын

    A massive F to Radu Negulescu, pay your respects fellas.

  • @the_dan

    @the_dan

    3 жыл бұрын

    It may be a coincidence, but he could be a known young romanian entrepreneur. Anyway, respect from a fellow romanian.

  • @Ruslan-S

    @Ruslan-S

    3 жыл бұрын

    In case anyone wonders, F doesn't refer to anything like the "F" word and instead it's a keyboard key that is frequently used to "perforn an action" in video games and is a reference to one. Sorry Pablo for spoiling the reference a bit, but "a massive F to Radu" could be read the wrong way by some :D

  • @aj4138

    @aj4138

    3 жыл бұрын

    Ruslan lol yeah,more specifically it means ‘pay respects’ to Radu

  • @aytenbadak
    @aytenbadak2 жыл бұрын

    Videonuzu beğenerek izledim çok keyifliydi böyle keyifli videoyu bize sunduğumuz için teşekkürler yalın bir anlatım olmuş

  • @dimtgco1428
    @dimtgco14283 жыл бұрын

    So if the universe is expanding, is it because more empty space is being created, or, is the fabric of spacetime just being stretched ? If its stretched, would it eventually tear, or, would it spring back all the way to the singularity it came from? What probability would you assign to each of the above?

  • @Rssks
    @Rssks3 жыл бұрын

    Can't wait till we get the age of the universe down to one hour precision :)

  • @nicolepinkston7003

    @nicolepinkston7003

    3 жыл бұрын

    Scientists are already late on it having a beginning.

  • @yourstruly4817
    @yourstruly48173 жыл бұрын

    But do we know if time always passed in the same pace?

  • @shubhamagarwal480

    @shubhamagarwal480

    3 жыл бұрын

    @Yours Truly I was also wondering the same🤔

  • @dangrabko

    @dangrabko

    3 жыл бұрын

    Ken Keller Speed of what? Light/causality? Doesn’t the experience of time depend on absolute speed of the observer?

  • @AyaJuni

    @AyaJuni

    3 жыл бұрын

    Time always runs at the same pace for the ovsever at "his" exact place, that isn't the case for places somewhere else, who relative to you are under a diferent gravity and speed state than you. So realative to your time and space i.e spacetime everything will be seen as normal. That to say we can see at the CMBR that the universe after infaltion and cooling down expanded at nearly the same pace. So if you would like to define a general conclusion you could say, that time expanded everywhere relatively equaly. BUT giving e.g. earths current distance, expansion and speed comparetivly to distant objects, our timeline is vastly streched, but if we where to teleport to that place, which must also stay static relative to our position, we would not enter past or future events of that place, but "present" events. Also note that time isn't a static constant and also not a fixed point and Terms like "past, present and future" must always seen relative to the relationship between obsever and his/ her interactive relatinships with other spacetime events.

  • @cavalrycome

    @cavalrycome

    3 жыл бұрын

    How could it not pass at one second per second?

  • @billmcdonough3950

    @billmcdonough3950

    3 жыл бұрын

    Time always passes at the speed of time, which is dependent on the observer's velocity through space... which, of course, is a function of distance and time. And that pain you're feeling just behind your left temple? That's time and velocity getting together to mock attempts to conceptualize the very mechanics of entanglement that make conceptualization possible.

  • @pauloro96
    @pauloro963 жыл бұрын

    Felicitari Radu!

  • @SoSSmokeyMcPot
    @SoSSmokeyMcPot3 жыл бұрын

    Thank you for the video :)

  • @gibranhenriquedesouza2843
    @gibranhenriquedesouza28433 жыл бұрын

    Please, can someone give me a pos-doc position? I finished my PhD in Neutron Stars in October 2017 and since then I did not find any new research position.

  • @lstein8670

    @lstein8670

    3 жыл бұрын

    Yeah the first job after uni can take some time, just don't give up if it's something you truly want to do.

  • @gibranhenriquedesouza2843

    @gibranhenriquedesouza2843

    3 жыл бұрын

    @@lstein8670 I am unemployed and tired of waiting. I need a good job NOW!

  • @rickrobitaille8809
    @rickrobitaille88093 жыл бұрын

    Para phrasing feynman Time is something that happens when nothing else does..

  • @Cerevisi

    @Cerevisi

    3 жыл бұрын

    Also, time is the thing that keeps everything from happening all at once.

  • @hans-joachimbierwirth4727

    @hans-joachimbierwirth4727

    3 жыл бұрын

    That idea stands in contrast to relativity.

  • @xXSchimpXx

    @xXSchimpXx

    3 жыл бұрын

    literally speaking no cuz if nothing happens you cant measure time and itd be like time would be frozen

  • @hans-joachimbierwirth4727

    @hans-joachimbierwirth4727

    3 жыл бұрын

    @@xXSchimpXx Which is utter bullshit since mass is energy AKA a quantity of something happening, and where is no mass there is no spacetime, so that there is neither frozen time nor any time at all, not even a space wherein such a thing could exist.

  • @rickrobitaille8809

    @rickrobitaille8809

    3 жыл бұрын

    @@hans-joachimbierwirth4727 Feynman at the time was submerged deep into quantum electrodynamics..

  • @jamesmohr7373
    @jamesmohr73733 жыл бұрын

    I love the schrodinger reference.

  • @JaredS129
    @JaredS1293 жыл бұрын

    Vesto Slipher has got to be the coolest name in history.

  • @dontforgetyoursunscreen
    @dontforgetyoursunscreen11 ай бұрын

    For all creationists the first structures humans built date back 12,000 years & are older than any of your estimates

  • @olivercharles2930

    @olivercharles2930

    10 ай бұрын

    Humanity is literally older than their myth.