M101 - Supernova and Pinwheel Galaxy - Deep Sky Videos

[@numberphile]

cheers... still plenty more to come from DeepSkyVideos this year

[@CTJ2619]

I liked your analogy of foam on the waves. great video. I studied astronomy as an undergraduate and your videos are renewing my interest in astronomy.

[@stefanschneider3681]

Even ten years later still very fun to watch and very interesting!

[@numberphile]

I'll probably put a call-out video on sixtysymbols at some stage soon... or just DM sixtysymbols

[@JordanALAllen]

Currently got the scope set up in the backyard imaging M101! Inside now making a cuppa and brushing up on my astronomy knowledge! Many thanks for your really helpful videos.

[@GregoryEvansRacing]

I had that M101 image as my desktop for a while. Gorgeous.

[@DeepSkyVideos]

thank you! glad to have you watching!

[@pbezunartea]

Are you kidding? Thank you so much for these amazing videos. Really, I was already interested in Science, but your videos make being up to date extremely entertaining, apart from educational and informative. Thank you for participating in making it happen!

[@numberphile]

sounds uncomfortable... another one coming soon!

[@m00niee]

You never seem to disappoint.. Keep at it Brady, you rock.

[@the_mentaculus]

Great video! M101 is probably my favorite Messier object. Such a gorgeous, rich, textured spiral galaxy.

[@hunterwyeth]

Prepping myself for the new event!

[@chingy1077]

i absolutely love astronomy and love this channel =D

[@DudokX]

this was probably one of the best DeepSkyVideos! moar! :D

[@qKirbyp]

Mike has got a Colorado jacket on! Sweet.

[@drmoynihan]

Thank you for this video and your whole series.

[@GamingGherkins]

Have you considered doing an episode of NEOs and what they mean to the Earth? Or just NEOs in general? I find them so interesting!

[@Carl_Mansfield]

Very informative, cheers Brady.

[@DeepSkyVideos]

I am thinking of doing one again soon actually!

[@paulfrancis8836]

If that galaxy is so beautiful, then just call it Miss Universe.

[@yuvrajkumar5441]

if you take title back and give other galaxy Image a advance alien civilization take it too seriously

[@Justpooinabush]

I know this has nothing to do with this channel or video, but can you do a Q&A on sixty symbols again with the physicists Brady!? It is what got me subscribed to all these channels in the first place.

[@GThanatos]

any chance for a link to a high resolution version of the M101 picture they made?

[@MpowerdAPE]

love this channel. just love it.

[@sushaminirastogi7389]

Please make more Videos like biggest black hole,quasar,blazer,magnatar, stars,supernova ,etc

[@aaravmalviya2274]

facts about M101 or Messier 101 is cool also the supanova fact

[@raydredX]

If you have a ball going around with a string you can make it explode as much as you want, as long as the explosions are symmetric it will keep going at the same speed.

[@pdxyarnho]

I was trying to explain type 1A supernovae to my husband and we got stuck on this question: What happens to the partner star? Is it pushed, disintegrated, left as another stellar remnant? I was trying to give him examples of how things in the universe could be on their own (i.e., flung out of systems or not orbiting anything in particular), and I got stumped on that one. Can't find my old textbook, either!

[@boboften9952]

1:56 So On That Basis It Should Contain Life , As There Are Many Places That Are Sheltered From The Spiral Arms ( Sheltered Neighborhoods ) As Is In Solar System , And Galaxy .

[@DeepSkyVideos]

thank you!

[@MuadDib1402]

2:30 what causes the density wave in the gas? Is the density wave just in the gas or is it space itself being compressed? Forgive me if that makes no sense.

[@sca.astro1234]

Beautiful

[@codykonior]

Would the arms of the spiral galaxy coalesce into something more symmetrical over time, and if so how many revolutions/years would it take?

[@Vape4life]

Ok, i'm confused. I am by no means a student of astronomy, but something is confusing me. In several other videos i've heard that stars in a galaxy (regardless of their distance from the center) rotate around the center at the same rate, yet in ths video the professor is talking about the different speeds in which the stars are circling the center. So which is it? Do all the stars in a galaxy rotate around the center at the same rate....or different depending on their distance from the center?

[@jelletje8]

@ 3:20 there appears to be a galaxy behind m101?

[@raydredX]

If by mass decreasing you mean mass being expelled. Then the momentum "contained" in the expelled mass is lost too. I don't know what puffing is though.

[@the_mentaculus]

The direction of travel of stars within other galaxies can be detected through their redshift, I believe. I doubt you could do that as an amateur.

[@pbezunartea]

"Given my limit laymen understanding of angular momentum..." I think your question indicates a deeper understanding than you give yourself credit for... in any case, I agree with geertarwanabe... if you consider that the star just looses mass, in order for the momentum to remain the same, the speed would have to increase. The question is, is the momentum conserved when the star blows up? And I'm not so sure when collisions and explosions are involved :P

[@Justpooinabush]

Thank you so much!

[@DaRealFiberOptix]

i just realized... all these stars being born even with light years calculated, means that not only is there other civilizations on other planets, but there could very well be more civilizations evolving millions or billions of years behind us

[@NirrumTheMad]

AHH YESSS. MESSIER 101. my favourite

[@hla27b]

Really? Where do we submit the questions? I've got one about black holes.

[@geetarwanabe]

I doubt the change would be very much, but if angular momentum is conserved, and the mass reduces, then it would have to speed up. H=r X L ( L is linear momentum, r is distance. and X is the cross product ) So if r is contant and L=mV , then V must increase to conserve the angular momentum (H) I may be completely wrong though.

[@Psillytripper]

what if a chunk of standard candles go off in thick dust? Or vary by small differences? =o

[@prakashd4]

Can I get the printed copy sir if possible

[@Hobo_X]

Wow, I just saw this video on the side of youtube. I almost missed one of my favorite objects in Space because of a stupid youtube bug not showing new videos in my subscription list!

[@stephenslater4360]

thanks for all the nice comments from the Deep Sky fans.... for all of you based in the UK there's a documentary I produced and directed on BBC FOUR tonight at 9pm which you might enjoy.... Destination Titan... also available on iPlayer afterwards... the story of our journey to Saturn's largest moon.... hope you can tune in!, Steve S (Deep Sky Videos editor)

[@imbufnatu]

2:11 does not that contradict the galaxy rotation curve which should be flat? how can you calculate the rotation speed of a star in another galaxy? can you do that at home? :)) without a big fancy telescope?

[@jyrbian]

I thought that it was found the the inner oud outer stars in a galaxy spin at the same speed. I thought this is what leaded to dark matter being required to allow the galaxy spin at the same speed at the outside of the galaxy and neer the core. Was there findings that contradict that finding?

[@droid1226]

Thank you! Great Video

[@bigmac575]

So Brady, I thought the main reasoning towards Dark matter/energy is that the outer arms are traveling just as fast around as the inner arms. Yet in this video he clearly describes at 2:13 how the inner arms travel faster around the galaxy than the outer ones. Can you unravel this mystery for me Brady?

[@davidzdrojewski2355]

great print!

[@xlrv1]

I do not understand the difference between the two models proposed. The first one ("models where the white dwarf was accreting material from a really massive star"), which is ruled out, and the third ("the companion star...must be donating mass to the white dwarf"). What is the difference?

[@Olhado256]

So it seems. On Wikipedia you can find an extremely high-res (65 MB!) picture of M101 and the other galaxy is clearly visible.

[@jiberish001]

Yeah... I'm far too ignorant in this field to make any sense out of that equation. LOL But thanks just the same. :] Given my limit laymen understanding of angular momentum, my intuition tells me it would speed up, but I also know how very wrong intuitions can be. I would love to hear Brady ask a question similar to this.

[@stardude692001]

I thought Type1A supernova were all the same brightness because they were all the same mass when they exploded. This works if a white dwarf accreates matter but if two white dwarves merge the mass of the exploding star could be almost as much as twice the mass of a white dwarf that reached supernova though accreting.

[@kILlz0n35017]

Me too! i want to do this for a living!

[@zcmini000]

Exactly! I'd like to believe that there are other planets with life and other planets with intelligent life on it, but it's this massive time scale that makes me wonder if we will ever make contact with them. Think about it: maybe a civilization has sent a message to Earth before. If it came here now, we would detect it. However, if it came here anywhere from 100 years ago to 4 billion years ago, there was no way we could have heard it!

[@Destro7000]

I think galaxies around blackholes would be less comprehensive as a concept if we hadn't invented baths with plug-holes in them :p

[@Arghira]

but you showed us the star that blew up in M 101!!!

[@imbufnatu]

just checking... :) but what about the galaxy rotation curve? that is the velocities of stars in a galaxy should not depend on proximity to the center of the galaxy... i mean this is the best prove for the existence of dark matter. should any galaxy be different that would be very interesting...

[@sarojinichaudhury179]

After all, we are to remain satisfied with a still photograph .

[@Vape4life]

I thought I heard Dr. Meghan Gray say that because of dark matter, all the stars in a galaxy spin around the center at the same rate regardless of distance. Then I thought, well if that's true...then why would there be a spiral arm in the first place...that denotes difference in velocities...right?

[@DeepSkyVideos]

that's a worry!!!

[@prigual2901]

who or what is living there ?

[@hevendor958]

alot of a Life forms

[@openshores4288]

"Messier 101" lol it feels like a beginner's tutorial to Messier objects

[@un2mensch]

Eddie would go! :)

[@jiberish001]

When a star like our Sun puffs out its outer layers to become a White Dwarf; will it slow down, or speed up in its orbit around the center of our galaxy?

[@nebula6362]

It happened again.

[@Infloresence]

wow ... I was here on youtube about 5 mins ago, this new video pops up and already 102 views ...

[@MyBrainIsPrettier]

Some people like an orderly approach to classifying objects. Me? ...I prefer a Messier catalogue. (athankyew)

[@cv507]

löl italliänz at wöllkanöh idälljänce at hässdällen ^ ^

[@danielshade710]

This series just ends. Like the edge of the universe. Or the edge of space. Or light. Or matter

[@geetarwanabe]

Watch khan academy videos on cross products. Its not that hard :)

[@DaRealFiberOptix]

but if you know that then so do they =)

[@SmileAndWave]

:O

[@vinigretzky97]

2:40 ...shit happens :D

[@AVMamfortas]

I hope you lot realise just what phenomenally lucky buggers you are. When you still had the cradle-marks on your bums and could barely think, you decided to study stars. :)

[@Eliseoanton87]

nice. 1st

[@Ace0077]

get out of here, I could understand everything and I'm not even native speaker