The Milky Way: Crash Course Astronomy #37

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Today we’re talking about our galactic neighborhood: The Milky Way. It’s a disk galaxy, a collection of dust, gas, and hundreds of billions of stars, with the Sun located about halfway out from the center. The disk has grand spiral patterns in it, formed by the traffic jams of stars and nebulae, where stars are born. The central region is shaped like a bar, and is mostly old, red stars. There’s also a halo surrounding us of old stars.

Crash Course Astronomy Poster: http://store.dftba.com/products/crashcourse-astronomy-poster

Table of Contents
Milky Way Is A Disc 2:54
Grand Spiral Patterns 4:21
The Central Region Is Bar Shaped 7:48
Outer Halo Of Old Stars 9:09

PBS Digital Studios: http://youtube.com/pbsdigitalstudios

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PHOTOS/VIDEOS
Milky Way, Artist’s Drawing http://www.nasa.gov/mission_pages/spitzer/multimedia/20080603a.html [credit: NASA/JPL-Caltech]
Joshua Tree http://deepskycolors.com/astro/2013/04/2013-04_JoshuaTree_MW.jpg [credit: Rogelio Bernal Andreo]
Milky Way Center Region Mosaic http://sguisard.astrosurf.com/Pagim/GC.html [credit: ESO]
New Hubble image of star cluster Messier 15 http://www.spacetelescope.org/images/heic1321a/ [credit: NASA, ESA]
Artist’s impression of the Milky Way http://www.spacetelescope.org/videos/hubblecast70b/ [credit: ESA/Hubble and M. Kornmesser]
M83 (Hubble Only and Hubble-Subaru-ESO Composite) http://www.robgendlerastropics.com/M83-New-HST.html [credit: Robert Gendler, 8.2 Meter Subaru Telescope (NAOJ), European Southern Observatories, Hubble Legacy Archive]
Hubble’s Largest Galaxy Portrait Offers a New High-Definition View http://hubblesite.org/newscenter/archive/releases/2006/10/image/a/ [credit: NASA, ESA, K. Kuntz (JHU), F. Bresolin (University of Hawaii), J. Trauger (Jet Propulsion Lab), J. Mould (NOAO), Y.-H. Chu (University of Illinois, Urbana), and STScI]
NGC 3344 http://skycenter.arizona.edu/gallery/Galaxies/NGC3344 [credit: Adam Block/Mount Lemmon SkyCenter/University of Arizona]
Annotated Milky Way http://www.jpl.nasa.gov/images/wise/20150603/spitzer20150603.jpg [credit: NASA/JPL-Caltech]
Black hole with corona, X-ray source (artist’s concept) https://en.wikipedia.org/wiki/Black_hole#/media/File:Black_Holes_-_Monsters_in_Space.jpg [credit: NASA/JPL-Caltech]
A Galaxy and its Halo http://www.esa.int/spaceinimages/Images/2008/06/A_galaxy_and_its_halo [credit: ESA (image by C. Carreau)]
How to Become a Star http://www.eso.org/public/images/eso0102a/ [credit: ESO]

Comments

Justin Barlow says:

Where can I get those sweet alien toys on your desk?

Govinda Dasu says:

Interesting how he brought up crowdsourcing haha.

Peter Mozuraitis says:

I hope this has and will continue to inspire youth, to persue astrology and other higher sciences, and adults alike. This show is amazing !

Aryan Soni says:

Best Astronomy course ever.

Tavia Smith says:

The universe is so confusing and SO MANY QUESTIONS!!!

mary canovas says:

Great explanation and presentation but would somebody please!!!!! get rid of the intermediate colored circles. They are not only distracting but also unpleasant. There must be a better way to divide or keep interest in the course.

Truly Infamous says:

Don't cry over spilled milky way

JohnTanner214 says:

If anybody wants to see my Vlogs,please do.

Teethgrinder 83 says:

The size of the universe is just mind blowing-our galaxy is huge but nothing in the grand scheme of things. Crazy lol

Mileena and Scorpion Fan says:

*whips out a piece of Jupiter* I win because Jupiter.

Ropp Parren says:

Jeb seems a little concerned.

Hakkı Kaan Yüzbaşıoğlu says:

41 are from Andromeda

Alejandr Wesnin says:

What distinguishes these videos is that the guy is not afraid to say "we don't know" something – so you get a bigger picture

Phut Rizu Kayou says:

can someone explain how scientist know "so much" about milky way… and "we are here" (pointing our location on the galaxy) when voyager 1, the farthest satellit e barely left the solar system?

monstercolorfun co says:

The graphics at 3.40, is it a program?

Mr. Krabs says:

Wherr are his eyebrows

Quenten Schoonderwoerd says:

I literally got some milk while watching this episode…

Dianelle D says:

If we are inside the Milky Way, how can there be pictures of it from the outside?until I know, it would take some lightyears to get out of our galaxy, right?So, how can we know its shape and see images of it if we haven't get out of it? It's as if my stomach had a camera that could take a picture of my entire body… Explain me, please!

Bob Guzman says:

how old is the milky way?

ohsosmooth01 says:

Would have been nice to have a few 'we are here' signs on the milky way pictures lol

PrincessTS01 says:

humanity must take over and conquer the milky way galaxy!

Aaron Hall says:

It gives us an idea of how small and insignificant we are. But the only thing the world cares about are reality shows, constant annihilation and domination through wars among ourselves, and racial cultural differences that divide mankind. We should be learning how to advance mankind, understand our place in the cosmos, and learn how to harness it. Right now, we are living in the Dark Ages.

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