Hey Everyone. Just so you know, Stellar is a brand new miniseries we did in collaboration with Dianna Cowern from @physicsgirl and Joe Hanson from @itsokaytobesmart Over six episodes we travel to some of the world's most important telescopes, go inside amazing space research centers, and talk with brilliant scientists. The series kicks off with my trip to Gemini North at Mauna Kea Observatories in Hawaii, which detected one of the oldest Quasars ever seen. Next up, Dianna from Physics Girl visits LIGO observatory in Washington that detected the very first gravitational waves. Then Joe Hanson visits one of the telescopes that was part of world spanning Event Horizon Telescope. You'll be able to see future episodes on the Physics Girl and It’s Okay to be Smart KZread channels, as well as the PBS Digital Studios Facebook page. And for more good news, Stellar is a part of the PBS Summer of Space. They'll be lots of awesome space related content all summer long on PBS. See what's happening at www.pbs.org/summer-of-space/

@fgama2

5 жыл бұрын

PBS Space Time liked it!

@chinoETS

5 жыл бұрын

Dope.

@zoacynic1365

5 жыл бұрын

How many science channels does PBS have in youtube, i saw the zoology one.

@alisonwalker7372

5 жыл бұрын

Solitons!!! please... and what are sofar channels like?! :) Salinity is not hte dominant variable for the speed of the whale song

@metangas5

5 жыл бұрын

While I'm not interested in Astrophysics - in fact I'll be doing my master's thesis on some quantum measurement theory next year - I love your series and am very pleased you get to travel around the Earth to cool telescopes and just share your passion and knowledge in this way!

I didn't realise Matt was actually 3D until this video

@LuisSierra42

3 жыл бұрын

Actually, quantum mechanics forbids this

@klaus7164

2 жыл бұрын

Deepfake has come far I guess.

@rjsmith2007

Жыл бұрын

Don't be fooled. He's actually 5D. But only let's his power unleash in 2 of them most of the time.

2 videos in 3 days??? Wow my week is complete!

@TheCimbrianBull

5 жыл бұрын

It's almost too much to handle! 😀

Seeing Matt outside is like when you run into one of your teachers at the store.

Our favourite host Matt O'Dowd + Professional quality production + Insteresting topics = why bother paying Netflix with this astonishing content on KZread??

@TheCimbrianBull

5 жыл бұрын

@Adam Jensen I would do it for free, though! 😍

@nagualdesign

5 жыл бұрын

@Adam Jensen It shouldn't be chapped. You might be better of washing it rather than wiping.

@nagualdesign

5 жыл бұрын

@Adam Jensen Is that just a wild guess or does your chapped ass make you clairvoyant?

@nagualdesign

5 жыл бұрын

@Adam Jensen What makes you think that I never worked a dock for twelve hours straight? Bear in mind that this conversation is about _your_ chapped ass, and I haven't mentioned anything at all about myself. I think what you meant is that _you have_ worked a twelve-hour shift on the dock, and perhaps you think a chapped ass _is_ normal for dock workers. That about right?

@gatecrasher0380

5 жыл бұрын

@John Patriot eagle freedom boner 😂😂🤣🤣

I think this little miniseries of ours is gonna be good. Awesome episode, Matt! See you in a couple weeks, everybody 🤓

@wolvenar

5 жыл бұрын

I still think it would be great to see Beakman do something with you.

@besmart

5 жыл бұрын

@Peter Rabitt I'm honored that you would mistake me for Destin

@seachangeau

4 жыл бұрын

Its ok to be smart. Its not ok to keep peddling this baaad physics. Omg please stop its hurting my brain.

Great episode, Matt! I'm looking forward to the next five episodes, and not just because I'm in two of them. ;)

@stevec7923

5 жыл бұрын

Dianna is an awesome presenter, as is Matt. This collaboration project is excellent.

@besmart

5 жыл бұрын

@@stevec7923 Wow Steve, I thought we were friends 😂

@TheCimbrianBull

5 жыл бұрын

@@besmart You don't need enemies when you have friends like him! 🤣 😂 😅

@Q_QQ_Q

5 жыл бұрын

@It's Okay To Be Smart Only if you if you change channel's name to be "It's ok to be Dumb" 😂😂😂😂😂😂

@bigaschwing2296

3 жыл бұрын

@@TheCimbrianBull wtf why?

I get so fascinated by the concepts introduced in the ST vedios that I'm too awestruck to remember to "like" them.

@BernardoFlor_Krio

4 жыл бұрын

Happens a lot

Awesome seeing something outside of the studio. Matt did an incredible job hosting, he's a perfect fit for this kind of documentary which is something I never thought about or expected, but I hope to see a lot more content like this from PBS Space Time. Great job!

Someone give Matt his own TV show. Great stuff dude.

Loved the production values on this one. Had to share it with my father who loves and builds telescopes.

Your green screen looks different this time.

Got into the habit of mentally completing every yet-to-be-finished sentence with "...spacetime."

2 PBS Space Time videos in 2 days and *2 nearby habitable exoplanets just discovered* : _best week of the year!!_

@adamroach4538

5 жыл бұрын

Omj quit doing this😂

@SuperMassiveGrayCat

5 жыл бұрын

And last week I've met the best girl in our galaxy cluster and she likes me too!

@TheCimbrianBull

5 жыл бұрын

@@SuperMassiveGrayCat I hope she does not escape your gravitational pull! 😉

@PabloMartinez-kx9yq

5 жыл бұрын

Yes !

@alfredomarcos6583

5 жыл бұрын

What a great discovery

Matt, thank you for this video and series! It is so much better to see you on location while explaining physics and spacetime to us. Again, thanks very much, it really means a lot !!

Hey Matt, I'm happy you're getting the chance to talk so much about Quasars, I know how much you love them.

Loved seeing Matt outside of the green screen studio. I would like to see more episodes like this.

1:18 "You are now breathing manually"

Thank you Matt and the entire Space Time team! You guys manage to stay current, summarize,and yet delve deeper into physics than anyone else I know of in this medium. I always look forward to the uploads.

The animation/music pairing is absolutely unreal. Art conveys messaging so much better than words can.

This was... different! Great video, thank you

Love this “on location” Space Time ❤️

This is by far the best episode I have seen so far and I truly just LOVE how you have grown in your role as a presenter and host Matt. You are my favorite space guru and yes I am still insanely jealous of your epic beard. Keep it up, it was a pleasure to watch and listen!

This is one of my favorite episodes of spacetime and not even the most interesting one I've seen recently. So engaging and well-paced! Whoever is responsible for this change in style I appreciate you!

Love the episode, but please tune down the music volume a little bit. As much as I like it, it's distracting.

Excellent editting/cuts, and beautiful framing of shots

@lucian1985

5 жыл бұрын

And that soundtrack!!

Thank you for all the work you do on this channel. Ive learned so much from watching your presentations. Im very excited to see this whole series. Keep up the great work.

God im glad communities like this exist on youtube, its so refreshing to see people with actual intellect.

Of course he snuck in a "...spacetime." at the end, despite it being a different show.

@traviskohlbeck2532

5 жыл бұрын

I would have been disappointed if he didn't

@TheCimbrianBull

5 жыл бұрын

He probably also does it in real life! 😎

@AtlasReburdened

5 жыл бұрын

"You know, the best thing about this burrito is that the layers don't have precise edges, just like the wonderfully interwoven physics... _of spacetime."_ ".... Uh... ok sir, that'll be $4.99."

@TheCimbrianBull

5 жыл бұрын

@@AtlasReburdened ROFL! 🤣 😂 😅

I didn't think this channel could get any better, but there you go, fabulous video. Thanks for continuing to share your passion

I can't express how grateful I am for this channel OTL

Thank you for making this video. So much to learn, so much work to be done.

So good to see you out of the studio! Great video!

production is great but I think the music guy got a little carried away

@TheCimbrianBull

5 жыл бұрын

Agreed! It was kind of overly dramatic.

@obedebob

5 жыл бұрын

Nah its like the pbs channel

@TrueIronhorn

5 жыл бұрын

Yeah the editing and music made it feel very strange, wasn't a fan.

@april5054

5 жыл бұрын

Not just the music, the microphone quality is distressingly inconsistent.

@lucrativelepton

5 жыл бұрын

Idk I liked it, made it feel more magical (like a Disney vibe!)

Wow, what an amazing episode and beginning of this serie. Looking forward for more of this amazing content. This week can't get any better!

Amazing video as usual, but this was really something special! Excited to see more of this great new series. Fantastic work

Always a pleasure. Thank you for the video.

WAIT, what?! He's on location now? You're breathtaking!

Omg, i wasn't ready for this intro. Brilliant !

@modolief

5 жыл бұрын

.... one might even say Stellar

Thank you for explaining us everything on a level we understand.

Always exciting to see an astronomer out in the wild.

@TheCimbrianBull

5 жыл бұрын

It was reminiscent of Sir David Attenborough.

@lyrimetacurl0

5 жыл бұрын

In his natural habitat*

The most impressive BlueScreen effects ever, looks like if he was outside the studio for real

I really liked the background music. It gives everything a playful touch!

SO AWESOME to see you outside of the studio! I hope you get to make many more trips all around our ... spacetime.

Love, love, love the out-of-the-studio format - more, please!

I was waiting for it, and *YES* ... the video ended with space-time. Very satisfying.

I love the background music. It inspires awe. As it should. Everything about the universe should inspire awe

Love the new format, love the old format as well. I'm only a music major so a lot goes over my head, but that's a good thing- I'm tired of oversimplified science shows. Never miss an episode. Thank you!

Adaptive optics have been a real game changer.

*Thank you! I have always wanted to see that place.*

@ACEfromspace80

5 жыл бұрын

Dont think we got to see it..

@billdecat855

5 жыл бұрын

If you are in North America you can enter a contest at PerimeterInstitute.ca to go to Hawaii in October to tour the telescopes on Mauna Kea.

@Semirotta

5 жыл бұрын

ACE I don't understand your comment. I've never seen those telescopes closer or how they are. Imo I saw what I wanted to see. @Bill I am not from NA unfortunately in this case.

My favourite episode yet. Thanks so much

Awesome- wonderful!! Very eager to watch the mini-series . . . I love all areas of science and technology but astro-stuff is probably my favorite. With such great presenters and the expertise of so many brilliant people, this series should be absolutely amazing! Thanks Matt, Dianna, and Joe, and the production team!!

Thanks PBS for taking me places I'd never get to see otherwise :)

Excellent entertainment and educational material. Mission accomplished!

I love this show, and particularly this episode! Keep up the good work! I love how KZread is now, and PBS has for years, been making this information so readily available. Assuming we don't have an apocalyptic, or dystopian future, I cannot wait to see where science and understanding takes us in the sixty years.

Thanks for the great videos and lessons, Matt! Keep them coming. They keep us thinking and stretching our imagination.

Yup, he ended this one with "spacetime" too...

The sound of the cryogenics is astonishingly musical. ;-)

I would just like to say how much I appreciate these presentations from someone who can bring physics to the masses without wandering off into that never-never land which Carl Sagan found so irresistable.

It's amazing that there were supermassive black holes so early in the universe's history.

@modolief

5 жыл бұрын

!!!

"Do you hear that sound?" - Great job producers.

@GlassTopRX7

5 жыл бұрын

And I thought that was the engineers just showing off. Truthful I was thinking the same thing when he said that.

That deformable mirror stuff is pretty crazy tbh. Well played, engineers.

@tonykaze

5 жыл бұрын

I just wish I could hear the first pitch for this idea. Some grad student probably got laughed at... Then went and did it 2 years later XD

I drove to the top of Mona Kea a few years ago. Walked into the visitor area at the Keck domes. Loved being up there. Beautiful.

Very excited about the new Stellar mini series....love SpaceTime, PhysicsGirl and It's Okay to Be Smart....excellent collaboration! Keep up the great work!

Dat production value doe 👌🏼👌🏼👌🏼 top notch guys ☺️

Great Greenscreen u got there buddy! almost looks like they let you out into the real world!

@zanarkandmusic

5 жыл бұрын

ROFL

This is the most realistic green screen background yet! :-D Seriously, thank you for sharing your on-location work with the Gemini North telescope. I look forward to learning more about this quasar and its associated blackhole. Best, Shan

Just a compliment, you guys have amazing and impressive animations and graphics. They make things much easier to understand

Happy to see you outside the studio mate. Fresh air will do both you and the channel good :-)

@michaelsommers2356

5 жыл бұрын

Unfortunately, there isn't much air on top of Mauna Kea, fresh or otherwise.

Hypothetical question based on my understand that two event horizons that overlap (touch) can't ever separate again: Imagine a 1 billion solar mass black hole (so the event horizon is massive and very gravitationally weak) is travelling at a velocity of 0.9c through empty flat intergalactic space, now imagine an identical 1 billion solar mass black hole travelling at 0.9c but in exactly the opposite direction so the two are heading roughly towards each other. The black holes paths, once all the space time warping is taken into account, aren't on a direct collision but the outer most edges of the event horizons will just 'clip' each other, ordinarily only overlap for a fraction of a nano second as these two bodies are travelling at such incredibly fast velocities and in opposite directions to each other. So firstly, am i right in thinking that if two event horizons overlap they can never 'unlap'. Secondly, what would happen to this incredible amount of momentum of each other the black holes? Would it just get instantly turned into gravitational energy? Bearing in mind when black holes normally merge it happens very slowly as black holes slowly move closer and closer together over millions of years giving of gravitational energy as that happens, so not in a fraction of a nano second as in this case. and thirdly, what would this look like? Would the event horizons remain fairly spherical and the radiated energy just insane or would they stretch and warp into a kind of long thin elastic event horizon as they shoot past each other and then over time slow down and snap back to each other?

@periurban

5 жыл бұрын

I think if the event horizons overlap the two holes will merge, but as to what it looks like? Well, how are you going to look at it! If you were there it would just be a massive light that would fry you. I don't think they'd stretch. I would imagine them just spiralling into one another to create a bigger hole. The holes can also form a binary.

@johnomanning5054

5 жыл бұрын

if 2 black holes have the same mass and thus radius then if their event horizons are tangent to each other then they would immediately merge as twice the mass of one of the black holes would be within twice the radius of one of the black holes. as for where the kinetic energy would go my bet would be that it would go into the rotational energy of the new black hole as both black holes would have an incredible amount of angular momentum relative to the center of the combined black hole. as for how and if the event horizons would deform I have no idea how that could calculated or if it's even possible as I've only recently finished learning special relativity

@Speak_Out_and_Remove_All_Doubt

5 жыл бұрын

@@johnomanning5054 The way I visualise a black hole is that its a point-like mass and everything else is just distortion, the event horizon isn't anything special per se it just happens to be the point of no return for light but the PONR for other particles is much larger. On super massive black holes the tidal forces aren't even that strong so you could easily fly a normal space ship over the event horizon and not even know it's happened. That is why I don't think your hypothesis is correct, they aren't bubbles that touch and instantaneously combine they are their own point-like mass objects that aren't anywhere near each other but because their gravity is so strong have some really weird properties that mean they can't pass each other by and then slow down over millions of years and then come flying back to wards each other and yo-yo like this until they merge but equally i can't see that that much kinetic energy getting turned into angular momentum as i would think it would be faster than the Kerr limit.

@garethdean6382

5 жыл бұрын

You are correct, the two holes must merge. As soon as their EVs touch their fate is sealed. But how does this work? The first thing to note is that the effect of gravity will be VERY significant; the holes will accelerate towards each other and will NOT move in straight lines. Indeed you'd have to have them moving sideways as significant speed initially just to not bend their own paths together. Second, the size of the holes doesn't matter. You might think that a large hole has a 'gentle' horizon and that somehow gravity's effect there wouldn't matter so much. But this applies only to tidal forces. If you let a spaceship fall past a large horizon it's still going to be falling at light speed when it crosses (Compared to a distant ship.) Combined this means that when the two holes 'make contact' then part of each will be moving towards the other at light speed. This is due to their immense gravities , which has been pulling their paths together. There is simply NO way to get them to make contact that WON'T result in the holes there merging at light speed. 'But these are big holes' you might say 'A large part of them will be outside of each other's event horizons and so could escape, surely?' And yes, if you could magically split a hole you could let some of it 'fly off' and not merge, but all of the hole is in its own EV. The holes hold themselves together infinitely well and so the overlap can only increase. For your second question, this depends how the holes are moving. In the simplest case they ARE fired directly at each other and hit head on. In this case the momentum is 'cancelled'; it's not in fact turned into gravitational energy because there's no need for energy to leave the system. It's like smacking two lumps of wet clay together, in that case the momentum is turned into internal heat energy rather than being emitted as something like sound. In the case of the holes it'd just undergo good old E = mc^2. If the holes are NOT aimed head-on then SOME momentum will have to be lost as gravitational waves. The MOST energy is lost when the holes orbit each other first. Your case will have a 'spiral' rather than an orbit, but it will still release gravitational energy as the hole's paths curve towards each other. (At 0.9c they could even get a partial orbit done near the end.) For your final question, the most distortion will happen again with an orbiting pair of holes, which will have the most excess momentum when they merge. A head-on collision would be very clean, just two spheres merging neatly into each other like two soap bubbles. The period of settling is known as 'ringdown' and though we have no visual evidence, the initial result IS a highly distorted black hole, looking more like an egg with a rapidly rotating equatorial bulge. This very rapidly becomes more spherical as massive amounts of energy are radiated, the bulge likely not getting to rotate even once abut the equator before it's settled down into far less energetic ripples and eventually nothing.

@Speak_Out_and_Remove_All_Doubt

5 жыл бұрын

@@garethdean6382 great answer thank you. Trying to model it in my head though, I'm sure we could manipulate the trajectories and velocities so that a few centimetres to the left and the event horizons don't touch so they just massive warp each others paths, maybe even a full 180 degrees from original direction of travel but a few to the right and then they over lap and so they instantly are locked together and already spinning as fast as the laws of physics allows so have to release insane amounts of energy and the only two ways I know a black hole can lose energy is gravitational waves and Hawking radiation. But it might not be possible to attain these highly tuned trajectories as the relativistic properties of the blacks holes moving towards each other means the increasing kinetic energy they originally would receive from falling into either other's gravity well is converted into mass but my understanding is this new mass doesn't get converted back into KE when trying to climb out of the gravity well does it? Maybe this is why they always have to orbit for quite a while to slowly radiate this energy. One last scenario, what if both black holes were made purely of electrons? Would this alter the interaction as they would both be 100-percent negatively charged? I know that relatively speaking magnetic forces are hugely more powerful than gravitational forces but a magnetic force degrades much more rapidly with distance and so possibly wouldn't come into play until the singularities were coming close together rather than the event horizons? I assume we wouldn't need to factor in synchrotron radiation when the charged black holes are orbiting each other as this radiation couldn't escape either?

I was there about 6 months ago, on top the mountain by the telescopes, amazing view and amazing to think about what the telescopes can see. I didn't actually get to see inside them that time but glad you showed how they look like!

so happy seeing more production value in these.

Very professional and great vid. Keep up the great work. :-)

Which Quasar is the farthest object ever observed? - it's a trick question, it was a gravitationally lensed proto galaxy! If you remember this quote, you qualify for a veteran's discount

Love this video. Matt is the total package: smart, good looking, great voice, and very personable. He should be a movie star :)

Amazing to see you out of the studio!

You’re walking! Your legs move! I’m so relieved. Hahahahaha!

Who let Matt out of the studio 😆. Jk great work sir!

@markb8468

5 жыл бұрын

Dude....awesome avatar....high hopes for the recovery of a specimen for the company.

@projectmanagement2356

5 жыл бұрын

@@markb8468 All other considerations secondary. 🍻

@markb8468

5 жыл бұрын

Ha! Well said. Hope Disney keeps it rated R....they have to right?

@projectmanagement2356

5 жыл бұрын

@@markb8468 You know I have been curious about that exact topic. We can only hope they do it justice.

@markb8468

5 жыл бұрын

We can only hope. The last 2 films we're BAD...they just weren't GREAT. I want pure unbridled terror...again. maybe my station in life doesn't allow me to put myself in the minds of the crew of the nostromo as it once did. Or maybe the films aren't as good. W the benefit of hindsight it's easy to see how absolutely terrifying the 1st film is

Oh wow he came back down to the planet for this one!

This is still one of the best space-time episodes ever to date. I've watched it at least 800 million times just like our own sun

Love you videos! But Ojos del Salado volcano is 6893 meters above the level of sea, 2688 meters more than Mauna Kea! But this one is still the tallest mountain in the world from base to summit 👌

@ntdscherer

4 жыл бұрын

Yeah it's not even close measured by elevation above sea level, which is the standard. It's not even the tallest volcano in the US. The only way it would be tallest is measuring from the sea floor. Interesting facts - the top 20 or 30 tallest volcanoes are all in South or Central America, including the point that is farthest from the center of the earth.

At around the 4:54 mark, I was overcome by the urge to listen to Pink Floyd.

*Best PBS Space Time video ever!*

i didn't think this channel could get any better but it did. wow

This is an awesome show !!! Looking forward to other episodes ;)

"Must breath, though, to keep breathing" - my new daily mantra

For me watching this episode is like my own personal adventure :) I am following some channels for a few years and when I see the quality still rising and I feel sort of proud ;)

Holy moly -- @mattofearth is KILLING IT! Thanks for all your hard work, man; been following SpaceTime for years -- and now I have another ridiculously addictive series to add to my watch list! Stay frosty, fam.

Great video Matt, my week has been saved by all your videos. At 4:56 is that a reference to Pink Floyd - "The Dark Side of the Moon" album from 1973?

@YellowPenetrator

5 жыл бұрын

or rather the pink floyd album was a very popular reference to the same physical effect ;)

Poor Matt, having to travel to Hawaii for work.

@benoitlevesque9609

5 жыл бұрын

SAD SAD SAD....

@Nik.leonard

5 жыл бұрын

At least he didn't have to travel to Chile...

@zoperxplex

5 жыл бұрын

Somebody's got to do it.

@TheCimbrianBull

5 жыл бұрын

Poor guy! The sacrifices he makes for science. 😁

@WaltRBuck

4 жыл бұрын

Yeah. I told him I'd it for him to save him, but he told me it was a sacrifice only he could make.

Hallelujah! Thank you for finally putting some reasonably enjoyable music into the background of your videos! You are drawing ever closer to the COSMOS standard. Now all we need is for Matt to spend a few minutes per video wearing a tie, and we'd have a truly classy presentation.

i like this collaborative miniseries idea. the 3 best youtube channels spending the summer bringing us awesome content from the most interesting corners of local... spacetime.

Blurring out the Toyota logo on your 4runner while visiting the Subaru observatory.. lol?

@calyodelphi124

5 жыл бұрын

The blurred out logo is because they don't want to deal with the legal complexities of sorting out product placement or company trademark infringement issues. Subaru is the Japanese name for the Pleiades star cluster--hence why the badge used by Subaru the car company is a certain familiar star cluster by the same name. ;) The observatory is named for the star cluster--not because of any corporate sponsorship.

Can the quick growth of these objects be as simple as matter being more concentrated in the early universe, allowing for comparatively more nearby stuff for black holes to attract and accrete?

@isnow8278

5 жыл бұрын

No.

@garethdean6382

5 жыл бұрын

It's very difficult to build a model like that which can match the growth rates needed, to the point where it currently seems unlikely that explanation alone suffices.

Wow I loved this episode. Thanks guys!

This is truly the beginning of something great.

Okay so I really love this channel. Thank you Space Time... great episode.

Great job, PBS Space Time goes on location! You got a budget for the Europa trip?

Love the series & the format! Please make a playlist for the videos.

very appealing episode/music/place - thank you space time