White Dwarfs & Planetary Nebulae: Crash Course Astronomy #30 скачать в хорошем качестве

White Dwarfs & Planetary Nebulae: Crash Course Astronomy #30

Today Phil follows up last week’s look at the death of low mass stars with what comes next: a white dwarf. White dwarfs are incredibly hot and dense objects roughly the size of Earth. They also can form planetary nebulae: huge, intricately detailed objects created when the wind blown from the dying stars is lit up by the central white dwarf. They only last a few millennia. The Sun probably won’t form one, but higher mass stars do. Check out the Crash Course Astronomy solar system poster here: http://store.dftba.com/products/crash... -- Chapters: Introduction 00:00 White Dwarfs 1:26 Planetary Nebulae 3:59 How Do Planetary Nebulae Get Their Shape? 5:56 Structure and Color of Planetary Nebulae 8:12 Will the Sun Become a Planetary Nebula? 9:35 Review 10:16 -- PBS Digital Studios:    / pbsdigitalstudios   Follow Phil on Twitter:   / badastronomer   Want to find Crash Course elsewhere on the internet? Facebook -   / youtubecrashcourse   Twitter -   / thecrashcourse   Tumblr -   / thecrashcourse   Support CrashCourse on Patreon:   / crashcourse   -- PHOTOS/VIDEOS Journey to the center of the Sun http://www.spacetelescope.org/videos/... [credit: ESA/Hubble (M. Kornmesser & L. L. Christensen)] Blowing Bubbles http://chandra.harvard.edu/resources/... [credit: (NASA/CXC/April Jubett)] Artist's impression of the sizes of Sirius B and the Earth http://www.spacetelescope.org/images/... [credit: ESA and NASA] The Dog Star, Sirius A, and its tiny companion http://www.spacetelescope.org/images/... [credit: NASA, ESA, H. Bond (STScI), and M. Barstow (University of Leicester)] The Spirograph Nebula https://www.spacetelescope.org/images... [credit: NASA/ESA and The Hubble Heritage Team STScI/AURA] M27, NGC6853, Dumbbell Nebula https://www.noao.edu/image_gallery/ht... [credit: REU program/NOAO/AURA/NSF] Soap Bubble Nebula, PN G75.5+1.7 https://www.noao.edu/image_gallery/ht... [credit: T. A. Rector/University of Alaska Anchorage, H. Schweiker/WIYN and NOAO/AURA/NSF] Hubble Sees Supersonic Exhaust From Nebula http://www.spacetelescope.org/images/... [credit: Bruce Balick (University of Washington), Vincent Icke (Leiden University, The Netherlands), Garrelt Mellema (Stockholm University), and NASA/ESA] Hubble snaps NGC 5189 http://www.spacetelescope.org/images/... [credit: NASA, ESA and the Hubble Heritage Team (STScI/AURA)] A dying star’s toxic legacy http://www.spacetelescope.org/images/... [credit: ESA/Hubble & NASA] Eskimo Nebula http://www.nasa.gov/multimedia/imageg... [credit: NASA/Andrew Fruchter (STScI)] Planetary nebula Abell 39 http://www.noao.edu/image_gallery/htm... [credit: WIYN/NOAO/NSF] The Butterfly Hunter http://chandra.harvard.edu/resources/... [credit: (NASA/CXC/April Jubett)] Red Giant Sun (video) http://www.spacetelescope.org/videos/... [credit: ESA/Hubble (M. Kornmesser & L. L. Christensen)] The planetary nebula Abell 33 captured using ESO's Very Large Telescope https://commons.wikimedia.org/wiki/Fi... [credit: ESO, Wikimedia Commons] ESO's VLT images the planetary nebula IC 1295 http://www.eso.org/public/usa/images/... [credit: ESO] Looking Down a Barrel of Gas at a Doomed Star http://hubblesite.org/newscenter/arch... [credit: The Hubble Heritage Team (AURA/STScI/NASA)]