I am happy that kids and people of any age can watch Mr. Butlers videos and learn from them. I was around 7 when I read about the universe and borrowed all the books I could on the topic. At that time there was no internet to provide the information I wanted. Neither in school did anyone teach about the universe, just plain simple physics. Size of atoms and distance of light years and the (un)known size of the universe was clear to me from early age, and before I was a teenager, I enjoyed to investigate the theories about black holes. I hope you all appreciate the exceptional good material that now is online. A big thanks to David Butler!!

David, your work is like one coming across a Chest of Treasure - thank you!

Your videos are amazing. I was an English major but developed a major interest in physics in my 40's...I've gained so very much from other Physics sites/videos.....but have found few which mix the mathematics and concepts in such an accessible manner. Please......keep feeding my brain :)

I've been on a David Butler binge-watching today from 8 in the morning and now it's 10:00 at night. I'm hooked I love this channel

My husband is very impressed with your skills as an educator and so I am. I feel a bit more educated! I am in awe of the galaxy and the fact that we have life on earth. I feel guilty for not understanding how geometry works!I was terrified of math and never knew what math was about as a kid. At 73 I realize how sad it was for women like myself were not encouraged to learn science and math. (ethnicity women marry and have kids and are secretaries) It means a lot to me to have an understanding of how things work ! Thank you.

Master of the Cosmos Mr Butler

I became hooked when I saw your first video explaining distance calculations across your pool and expanding from there. Thank you very much, Mr. Butler, for all the voluntary time you spend making this a fascinating time to be alive. John

@howfarawayisit

8 жыл бұрын

Jack Buster You are most welcome. It has been and continues to be a labor of love.

4 People that disliked this video are struggling to get their GED.

What I would give to have a few hours to sit down with someone that has such an understanding of space.

so much expansion of understanding in just one year. I'm looking forward to the 2015 update. Thank you David !!!

Thank you for putting these together, I'm in my 40s and enjoy watching anything related to astronomy, physics, etc. ... kinda funny, I hated school and dropped out in the 9th grade. I'm a mechanic now, I love my job and wouldn't change anything. I recently picked up a telescope after years of threatening to get one. These videos are great, and really appreciated that someone took the time to make them, I have learned a lot... much gratitude.

You relax me so much .. plus I learn something EVERYTIME I watch your video. Thank you

Your channel deserves WAY more followers it honestly makes me sad. Thank you for the amazing content we appreciate it so much

@ihateyoutubecomments8100

Жыл бұрын

I can't stand when people say that a Channel or a person is underrated. However in this instance I cannot think of a channel and more than anything a person that deserves that title of "underrated" more than this man. Not only is he pure, extremely intelligent, a wonderful teacher, but he not one speaks of anything as far as political or anything to do with any other channel as far as drama bullshit it's all about his pure love for this stuff and I just I could listen to it forever. I wish she was my grandfather and I say that not in a joking way I never met my grandfather's and I love this man

@ihateyoutubecomments8100

Жыл бұрын

Tycho has one of the most amazing Minds. For him to be sitting on Earth and to do his equations to find that there's no Parallax on the comment and then it must be six times farther away than the moon and actually be relatively spot on is absolutely mind blowing to me. I love every word you say my friend love it. Hope you guys had a great holiday

David, I love your video books and single videos subjects like this one. I've learned so much from your videos albeit I have to look at them over and over again in order to take it all in . watching them gives you one thing, it gives you the realization that time ,distance, speed and size is totally beyond our real understanding and comprehension because these things are so vast we cannot get our heads around them.

@triggerhappyjay4794

4 жыл бұрын

100% accurate

Something that I would have found useful in this video that I think most people don't know: A comet's tail always points away from the sun, not behind it, like we might intuitively suppose. Otherwise, these videos are so amazing! Could you do a series on the history of the probes we've sent through the solar system and what we've found with them?

Subscribed, excellent information provided in your work.

Thanks for this series & the updates. I love it all ... Stay well ... I'm looking forward to the 2015 update ... Just a suggestion ... You might add a "what to look for in 2016" segment, to keep us looking up ...

Very well done and informative series. I just started getting into astronomy a few months ago as a hobby and your videos helped explain alot of what I could not understand in the books I have read. Thank you.

Astronomy + classical music = AMAZING!

Another amazing and well-organized chapter to add to my favorite video book. If you ever need an "understudy" Dr. Butler, I know the series by heart! already

@howfarawayisit

8 жыл бұрын

+Chris Still You are very kind. Thanks.

David i like all you videos.. thanks from making them.. i aspire to become a theoretical physicists.. you videos have revived a lot of information learnt while my grad.. thanks for sharing.. stay blessed

Welcome back Mr Butler! Missed your videos!

Love all your videos, David. Thanks for posting and thanks for all your hard work. I have sent your videos to many of my friends, and they loved them, as well. Keep up the incredible work, and I always look forward to seeing more of them!

Bet those scientists were almost as disappointed as I was when that lander bounced.

Excellent as always, Dr. Butler.

Great Videos!! My son and I have watched your series several times. Keep up the good work!

Thanks David for all the great work you have done

Hello David. I recently discovered your channel and I enjoy watching your videos. I learn a lot from them. I also like to listen to your voice. Your vocabulary is perfect. It reminds of Gary Null on WBAI. Thank you for your amazing videos.

So excited for the 2015 update.

Amazing images, beautifully presented, thank-you again for a pleasant education of the stars.

Thanks David for all the great work you have done you always have very interesting first class videos look forward to the next one

Thanks for the update: Looking forward for an update on "Laniakea"

thanks for a update. i really enjoy it mr david butler.

This is truly a wonderful channel.

I love this videos thank you, David!

Awesome stuff … really informative … thank you … !

Cant wait for the 2015 update!

Dear Sir, thank you very much for your educational videos of which I have watched a few. I like the way you talk, the way you teach and the way you are presenting the lectures. Take care, Renato from Switzerland

I love your videos sir. Very informative and easy enough to understand. Thank you for your hardwork! Cheers from Turkey.

Amazing video as always David.

With regard to all star activity and formation the Thunderbolts Project has show extraordinary data and laboratory experiments to back up their findings of an Electric Universe Theory, it should be in the interest of mainstream cosmology to look into these findings rather than ignore them because doing so is counterproductive to scientific advancement. I personally believe that many of the areas that remain “unknown “ to the mainstream just may become more understood by actually incorporating the research gathered from the Thunderbolts Project.

Thank You so very much for doing these videos. I know you probably do this for your own enjoyment but i enjoy this information very much. I watched an interview of a scientist a few years ago and his main point was to really have a grasp on a subject you should be able to explain it to a fifth grader, well you've succeeded Sir! And thanks again.

I really like your videos, keep up the great work! Thanks :)

I'm most impressed that all this went on in the same world as fax machines.

Hi David. Great work on your videos. I understand hat you just released a new series only a couple of months ago, but will you be releasing a 2015 update in the near future? Keep up the good work!

@howfarawayisit

8 жыл бұрын

+Eric Inward Thank you and thanks for asking. The 2015 update should be ready in a few weeks at the most.

Wow apart from the comet landing I havent heard anything about the rest of news. Thanks for the video

I remember getting up as a kid and seeing Comet West☄☄........WOW, I'm getting old

Great update. A small recommendation - Jan Oort's first name is pronounced Yan. Thanks!

@howfarawayisit

9 жыл бұрын

Thanks for the info.

@MaestroRigale

8 жыл бұрын

+Arc Kocsog You beat me to it! IPA should be taught in schools, it would make life so much easier.

Another fantastic video. Thank you very much.

So educating !!!! I love it , Thank you for making me more smarter, although the math calculations are way above my pay grade, but very interesting to observe. Regards, Rene , Sarasota, Florida

Thank you for these videos.

Three cheers for David Butler!

G-2 gas cloud may have been further away from the central black hole then we thought hence it was not effected by the passage.

Wonderful, thank you!

Dr Butler: starting at the 3:30 timeframe in this video, i.e., the picture of the tapestry dated to 1066 showing the comet in it, was that from the famous Bayeux Tapestry, which, in a pictorial fashion, on a long scroll like, well, tapestry, portrays events that led up to William the Conqueror's takeover of England? I wonder, since in your video it's dated 1066, the exact year of the conquest. And it looks a bit like the Bayeux Tapestry. I've seen some shows on it in the past but can't remember if any ever mentioned the inclusion of a comet spotted in the sky. Just curious... thanks again for the wonderful series!!

@howfarawayisit

7 жыл бұрын

I don't know. It might be.

@MrKmanthie

6 жыл бұрын

Yes. Yes it is the Bayeux. As you mentioned in the video, it was seen in 1066. That portion of the tapestry where it's shown is soon before the "battle of Hastings", when the Normans invaded England & deposed King Harold, installing their leader, William the Conqueror as King in his stead. That comet, from 1066 is also Halley's comet...though not at that point known as Halley's Comet, since it was about 600 years or so before Edmund calculated the various comet sightings that turned out to be 75 years apart & deduced from the periodicity that they were all one & the same comet, returning on a regular 75-year orbital path, etc.

Hello David: any preliminary thoughts on that Gas Cloud/Black Hole event? Thank you again for making your work available to everyone.

@howfarawayisit

9 жыл бұрын

Only that I think UCLA should have been less certain that it was a cloud in the first place.

@RobSinclaire

9 жыл бұрын

Aha! Thank you again for all your work, Rob

Im confused at time stamp 21 minutes you suggest that NGC 5548’s black hole, or near its bright active nucleus. There is a production of UV radiation that acts like a consistent solar wind. Iv never heard of photons pushing matter out of the way, didn’t think it was possible. Perhaps the wind is actually consist of charged particles or ions that are emitting the UV Radiation?

i have no interest in becoming an astrophysicist but man these videos are so cool, the universe is so interesting

Amazing thanks

Totally Awesome Mr. Butler. I am so Awe struck are the wonders of Gods creation both large and small. Thank you, Durf

@7:17... Can you explain what exactly is the "Bow Shock" along with the "Termination Shock" which is seen in the graphic? @7:17 into the video

@howfarawayisit

9 жыл бұрын

Tools Toolbox Tools, I cover the Bow Shock and Termination Shock in the "How far away is it" chapter on the Heliosphere: kzread.info/dash/bejne/pmeTuM2NlqaxppM.html

You mention the Hubble Space Telescope several times. It is sad that Hubble's life may come to an end, maybe sometime after 2020. There are several things that could go wrong with it (its guidance sensors, its communication systems, one of its computers). We can't do maintenance on it anymore since the Space Shuttles have been retired. I will miss Hubble someday.

@howfarawayisit

9 жыл бұрын

Scott9084 Me too.

Thank you.

You are the Bob Ross of space.

R.I.P. Philae

@charlotterosetta3063

4 жыл бұрын

I feel Phil crawln around my innerds :)

Thank you so much for all of this! Great research, well processed and presented all the way through. Came back to stargazing lately and this videobook finally had me hooked. Emerging evidence of Planet 9 and especially exoplanet research will keep me curious for a long time to come and I can't wait for James Webb & E-ELT to be out there. Also, what I find curious is that the number of hits is decreasing the higher you step on that ladder. In my mind it should be the other way round, really. Adding to that, half a million views for flat earth conspiracy theories to me just illustrate how we as a whole have a long and hard way to go in handling the unknown. Cheers!

I recently heard Lisa Randall connect extinction events with the sun's oscillation above and below the galactic plane. I'm more interested in the research on how we even figured out that we are oscillating within the galaxy. Can you help?

@howfarawayisit

7 жыл бұрын

All stars are sinusoidaly moving across the galaxy plane. Nothing unusual happens.

@MrKmanthie

6 жыл бұрын

she's not a very serious science teacher. she's more of a fame-hustler.

Hi David Butler - I love your video posts. Very informative and super interesting. I'm a layman and no scientist but I'm very intrigued by astronomy and astro physics. A few questions - 1. How could the newly identified binary stars Sag A be mistaken for a gas cloud G2 in the first place? 10:08 Are the binary stars surrounded by a very large gas cloud? Are the binary stars so close together that they share and swap gas between them? 2. If they are surrounded by a gas cloud, how was the cloud able to retain its form, more or less, and actually orbit around the black hole? Wouldn't the black hole suck most of the gas away as the binary pair came close to it? 3. A side question: How many objects are in close orbit to the black hole? Do we have a reasonably good idea? Mysteries. But of course fascinating. Thanks for all you do.

@howfarawayisit

8 жыл бұрын

+Toosin Beymen Toosin, Thanks for our comments. Here's what I have on your questions: 1. Sometimes, hoping something will be true taints ones opinion as to weather it is true or not. This happens with scientist as well. The beauty of science is that new facts overturn unsupported theories. 2. There is no gas cloud after all. 3. One estimate has 20 billion stars in the galactic bulge. They are 100 times more densely packed together than stars are out in our neck of the wood.

@toosinbeymen6304

8 жыл бұрын

David Butler Thank you very much for taking the time to answer my questions. Much appreciated. The cosmos is endlessly fascinating and I've always found the study of it to be a highly enriching experience.

moon craters are there because of no atmosphere if this is true than mars have good atmosphere or story is completely something else?

Last time, I watched a documentary from your hands (far away Galaxies), I thought that I had to be sleepy, now I know I was wrong, because you do use the most beautiful pictures. The picture of the Tarantula Nebula and R136 looks like it was a drawing of sorts meant to adorn a fantasy story, or like it was made by one of the Dutch masters, the quality is as such that it seems so unreal, just like some paintings resembling a photograph rather than an oil painting. In the end it must be nothing more than a mind used to grainy images, trying to deal with the high definition of both youtube and modern telescopes. I am a little anxious though, I was trying to find your your series on relativity, but I could not find it, is the series up? If the series is not up yet, is there any chance on a sneak preview?

@howfarawayisit

9 жыл бұрын

RzzRBladez The Hubble pictures are indeed spectacular. Sorry, no sneak previews. It should be out in the late fall or early winter.

@RzzRBladezofoccham

9 жыл бұрын

David Butler I bet you are already a long way into creating your documentary series, will you be posting them all at more or less the same time or will it be a weekly or monthly release?

@howfarawayisit

9 жыл бұрын

RzzRBladez I release the set all at once. I'm targeting October.

@RzzRBladezofoccham

9 жыл бұрын

David Butler A night of documentary spree, I can't wait. Thank you very much.

This black hole things did not fit in my head some thing is not right maybe the name of the mechanism?

Another question... Given that the comets travel at such high velocity, how is a lander able to land successfully on the comet? Maybe a stupid question, but it just seems very difficult for something to land on another object which is moving so fast.

@howfarawayisit

9 жыл бұрын

Tools Toolbox As the spacecraft nears the comet, it adjusts its velocity to be exactly the same as the velocity of the comet. The hard part to dealing with the comet's rotation. The spacecraft has to move into an orbit where one revolution around the comet equals one rotation of the comet (like GPS satellites in stationary orbits around the earth). Once that is done, the spacecraft is hovering motionless over the comet. Landing a ship is then quite straight forward.

@fartknocker31

9 жыл бұрын

David Butler That's fascinating. Whoever derived this method is an important person (or important people) in physics and astronomy.

14:10 T Tauri stars are interesting and all but... I want to see more of that flaming hamburger in the lower right.

Typo report -At 6:21 "Astroid" to "Asteroid" -At 9:40 There are actually multiple comets named Siding Spring. This particular one was C/2013 A1 (Siding Spring)

@howfarawayisit

6 жыл бұрын

Got it.

How you guys give name to the stars and planets ?

@howfarawayisit

8 жыл бұрын

+cubanito288 The person who discovers a celestial object gets to name it.

Hello Mr Butler! I've asked the same question to few people and no one seem to give the answer so I hope that you might. The full moon in june (northern hemisphere) is as high in the sky as sun in december. It is quite opposite in december. The moon seems to change its orbital path every day! When its first quarter in june its as high (at its noon) as sun in april. Why? How?

@howfarawayisit

6 жыл бұрын

Edgars, Interesting observation. It would come from a combination of the moon orbiting the earth and the earth being tilted on its axis. I've never worked out the details.

Muy interesante 28-10-2018

The question is the craters was there before sea or sea made craters?

@Gonenow2015

4 жыл бұрын

All the way home!

So as Sagan said, there is still no observable evidence of the Oort cloud.

Great clip! But why is the German national Anthem playing from minute 13 on?

@Phineas_Freak

5 жыл бұрын

The Star birth could is therefor claimed by germany now! What are you going to do, international community.

The cosmos is one big disco

If Jupiter is a gas giant, why was its surface scarred (so to speak) by the comet's impact?

@howfarawayisit

9 жыл бұрын

I picture an air-burst nuclear explosion. It does quite a number on our gas atmosphere. The comet hit with the energy of trillions of tons of TNT.

@Omer698

9 жыл бұрын

David Butler thank you for the explanation

When it pours in the Midwest it literally comes down in sheets! You become instantly wet and a few minutes later it starts to flood.

just the thought our sea is stock in crater?

No new news....did Rosetta wakeup..I know i did :)

are you ready for wormwood??..we know about it too...

my Honor....

You have a great voice! You should read children's stories as well.

@MrKmanthie

6 жыл бұрын

???

Sick he has an Alienware computer

@howfarawayisit

9 жыл бұрын

Tim Batchelor It has the power I need to make the HD videos.

i realy want some good answer

@thesnuggler9606

5 жыл бұрын

According to Cosmology, earth went through a period of time called the Late Heavy Bombardment; during which asteroids constantly struck the surface. It is hypothesized by scientists that many of those asteroids also brought water with them, and that's how we got our oceans. The Late Heavy Bombardment probably lasted around a billion years, so craters at the bottom of the sea were made before the sea itself was deposited. If you're talking about the crater on the Mexican Peninsula, then that one was made by an asteroid at least ten miles in diameter and it struck during the Cretaceous Period, which is what science thinks helped kill the dinosaurs.

We should been on Mars long time ago our science is very slow why ?

Well when black holes eat up Galaxy of course the Galaxy disappears and other galaxies disappear when other galaxies get too close or the negative 2nd power of take it all this galaxy then and taken and other black holes make it more powerful pulling in more and more galaxies and that's why there might be such a dark areas around the galaxies where these black patches of nothing maybe Poland by one of those galaxies you see it to its black hole Wireless KZread speaker thing does not work for a while because it puts other words in then I say but I'm not going to start over.

Hate to do this, David, but you have misspelled LEYY as LEVEY on the opening page of COMETS. And Halley in Halleys Comet rhymes with Sally. Haley was a poor guitar player with Bill Haley and the Comets in the early 50's and the pronunciation has not recovered. Just silly little mistakes you made right together so I could not keep my big mouth shut. You know what a huge fan I have always been.

@howfarawayisit

7 жыл бұрын

No problem. I appreciate it when viewers like yourself find errors. That give's me the opportunity to correct them. Thanks.

We want you to narrate videos... please Sir!?

SF at it's finest...

?

why moon have more craters than mars

@howfarawayisit

7 жыл бұрын

One factor is that Mars has an atmosphere and the moon does not.

@shafikhan7571

7 жыл бұрын

just the thought our sea is stock in crater?

Hi, I have a few questions about ROSETTA. When the mission is over, will they crash land the orbiter on the comet? How far away is the spacecraft orbiting from the comet? Can a comet have a natural moon? Is there really enough gravity on the comet to hold Rosetta in orbit? What would happen if Rosetta's comet hit Earth, and could it ever? Will Rosetta's comet ever return to the Oort cloud?

Mybe the mars have more gravity than we know

Please, I beg you don't talk about BH; I mean, with all do respect, these entities exist only GR field equations, and no where else.

@howfarawayisit

7 жыл бұрын

Take a look at the 'How far away is it' video on the Milky Way. Then on that thread, please let me know what you think about our galaxy's BH.

@MrKmanthie

6 жыл бұрын

gene546 YOU ARE WRONG. (and unbearably pretentious, I might add).