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.

Listen beautiful relax classics on our Youtube channel.

Table of Contents
When low mass stars die they form white dwarfs 0:54
White dwarfs are roughly the size of Earth 2:16
Cloudy with a chance of Planetary Nebulae 3:59
Life Span 9:06

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

Follow Phil on Twitter: https://twitter.com/badastronomer

Want to find Crash Course elsewhere on the internet?
Facebook – http://www.facebook.com/YouTubeCrashCourse
Twitter – http://www.twitter.com/TheCrashCourse
Tumblr – http://thecrashcourse.tumblr.com
Support CrashCourse on Patreon: http://www.patreon.com/crashcourse

Journey to the centre of the Sun http://www.spacetelescope.org/videos/astro_ac/ [credit: ESA/Hubble (M. Kornmesser & L. L. Christensen)]
Blowing Bubbles http://chandra.harvard.edu/resources/animations/pne.html [credit: (NASA/CXC/April Jubett)]
Artist’s impression of the sizes of Sirius B and the Earth http://www.spacetelescope.org/images/heic0516c/ [credit: ESA and NASA]
The Dog Star, Sirius A, and its tiny companion http://www.spacetelescope.org/images/heic0516a/ [credit: NASA, ESA, H. Bond (STScI), and M. Barstow (University of Leicester)]
The Spirograph Nebula https://www.spacetelescope.org/images/opo0028a/ [credit: NASA/ESA and The Hubble Heritage Team STScI/AURA]
M27, NGC6853, Dumbbell Nebula https://www.noao.edu/image_gallery/html/im0688.html [credit: REU program/NOAO/AURA/NSF]
Soap Bubble Nebula, PN G75.5+1.7 https://www.noao.edu/image_gallery/html/im1059.html [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/opo9738a/ [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/heic1220a/ [credit: NASA, ESA and the Hubble Heritage Team (STScI/AURA)]
A dying star’s toxic legacy http://www.spacetelescope.org/images/potw1110a/ [credit: ESA/Hubble & NASA]
Eskimo Nebula http://www.nasa.gov/multimedia/imagegallery/image_feature_762.html [credit: NASA/Andrew Fruchter (STScI)]
Planetary nebula Abell 39 http://www.noao.edu/image_gallery/html/im0636.html [credit: WIYN/NOAO/NSF]
The Butterfly Hunter http://chandra.harvard.edu/resources/animations/pne.html [credit: (NASA/CXC/April Jubett)]
Red Giant Sun (video) http://www.spacetelescope.org/videos/hst15_red_giant_sun/ [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/File:The_planetary_nebula_Abell_33_captured_using_ESO%27s_Very_Large_Telescope.jpg [credit: ESO, Wikimedia Commons]
ESO’s VLT images the planetary nebula IC 1295 http://www.eso.org/public/usa/images/eso1317a/ [credit: ESO]
Looking Down a Barrel of Gas at a Doomed Star http://hubblesite.org/newscenter/archive/releases/1999/01/image/a/ [credit: The Hubble Heritage Team (AURA/STScI/NASA)]

Rating White Dwarfs & Planetary Nebulae: Crash Course Astronomy #30 is 5.0 / 5 Votes: 2
Please wait...