Brown Dwarfs: Crash Course Astronomy #28
While Jupiter is nowhere near massive enough to initiate fusion in its core, there are even more massive objects out there that fall just short of that achievement as well called brown dwarfs. Brown dwarfs, have a mass that places them between giant planets and small stars. They were only recently discovered in the 1990’s, but thousands are now known. More massive ones can fuse deuterium, and even lithium, but not hydrogen, distinguishing them from “normal” stars. Sort of.
Correction: In the illustration at 9:30, the numbers listed after the star names are the year of discovery, not distance.
--
Table of Contents
Intermediate in Mass 1:22
Thousands Are Known 4:48
Cannot Fuse Hydrogen Like “Normal” Stars 8:46
--
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
--
PHOTOS/VIDEOS
The sun in extreme ultraviolet https://en.wikipedia.org/wiki/File:The_Sun_in_extreme_ultraviolet.jpg [credit: NASA, ESA / Wikimedia Commons]
Jupiter http://www.spacetelescope.org/static/archives/images/screen/heic1410a.jpg [credit: NASA, ESA, and A. Simon (Goddard Space Flight Center)]
Forming a Planetary Gap http://www.spitzer.caltech.edu/video-audio/691-ssc2004-08v3-Forming-a-Planetary-Gap [credit: NASA/JPL-Caltech/R. Hurt (SSC/Caltech)]
Exoplanet http://uanews.org/sites/default/files/story-images/exoplanet.jpg [credit: NASA/JPL-Caltech]
A Trio of Brown Dwarfs (L/T/Y) http://www.nasa.gov/mission_pages/WISE/multimedia/pia14722.html [credit: NASA/JPL-Caltech]
Artist's concept of a T-type brown dwarf https://en.wikipedia.org/wiki/Brown_dwarf#/media/File:2MASSJ22282889-431026.jpg [credit: NASA/JPL-Caltech]
Brown Dwarf Gliese 229B https://en.wikipedia.org/wiki/File:Brown_Dwarf_Gliese_229B.jpg [credit: NASA / Wikimedia Commons]
Gliese 229B Spectrum - image provided by Phil Plait [credit: NASA/ESA/Hubble/Al Schultz et al]
Artist's vision of a T-dwarf https://en.wikipedia.org/wiki/Brown_dwarf#/media/File:T-dwarf-nasa-hurt.png [credit: R. Hurt/NASA - R. Hurt/NASA, Wikimedia Commons]
First Ultra-Cool WISE Brown Dwarf http://wise.ssl.berkeley.edu/gallery_firstbd.html [credit: NASA/JPL-Caltech/WISE Team]
Brown Dwarf Comparison http://www.nasa.gov/mission_pages/WISE/multimedia/pia12462.html [credit: NASA/JPL-Caltech/UCB]
Storms Expected on Brown Dwarfs http://www.spitzer.caltech.edu/images/5718-sig14-001-This-Just-In-Storms-Expected-on-Brown-Dwarfs [credit: NASA/JPL-Caltech/T. Pyle (IPAC)]
Stars and brown dwarfs closest to the Sun https://en.wikipedia.org/wiki/Luhman_16#/media/File:PIA18003-NASA-WISE-StarsNearSun-20140425-2.png [credit: NASA/Penn State University]
Видео Brown Dwarfs: Crash Course Astronomy #28 канала CrashCourse
Correction: In the illustration at 9:30, the numbers listed after the star names are the year of discovery, not distance.
--
Table of Contents
Intermediate in Mass 1:22
Thousands Are Known 4:48
Cannot Fuse Hydrogen Like “Normal” Stars 8:46
--
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
--
PHOTOS/VIDEOS
The sun in extreme ultraviolet https://en.wikipedia.org/wiki/File:The_Sun_in_extreme_ultraviolet.jpg [credit: NASA, ESA / Wikimedia Commons]
Jupiter http://www.spacetelescope.org/static/archives/images/screen/heic1410a.jpg [credit: NASA, ESA, and A. Simon (Goddard Space Flight Center)]
Forming a Planetary Gap http://www.spitzer.caltech.edu/video-audio/691-ssc2004-08v3-Forming-a-Planetary-Gap [credit: NASA/JPL-Caltech/R. Hurt (SSC/Caltech)]
Exoplanet http://uanews.org/sites/default/files/story-images/exoplanet.jpg [credit: NASA/JPL-Caltech]
A Trio of Brown Dwarfs (L/T/Y) http://www.nasa.gov/mission_pages/WISE/multimedia/pia14722.html [credit: NASA/JPL-Caltech]
Artist's concept of a T-type brown dwarf https://en.wikipedia.org/wiki/Brown_dwarf#/media/File:2MASSJ22282889-431026.jpg [credit: NASA/JPL-Caltech]
Brown Dwarf Gliese 229B https://en.wikipedia.org/wiki/File:Brown_Dwarf_Gliese_229B.jpg [credit: NASA / Wikimedia Commons]
Gliese 229B Spectrum - image provided by Phil Plait [credit: NASA/ESA/Hubble/Al Schultz et al]
Artist's vision of a T-dwarf https://en.wikipedia.org/wiki/Brown_dwarf#/media/File:T-dwarf-nasa-hurt.png [credit: R. Hurt/NASA - R. Hurt/NASA, Wikimedia Commons]
First Ultra-Cool WISE Brown Dwarf http://wise.ssl.berkeley.edu/gallery_firstbd.html [credit: NASA/JPL-Caltech/WISE Team]
Brown Dwarf Comparison http://www.nasa.gov/mission_pages/WISE/multimedia/pia12462.html [credit: NASA/JPL-Caltech/UCB]
Storms Expected on Brown Dwarfs http://www.spitzer.caltech.edu/images/5718-sig14-001-This-Just-In-Storms-Expected-on-Brown-Dwarfs [credit: NASA/JPL-Caltech/T. Pyle (IPAC)]
Stars and brown dwarfs closest to the Sun https://en.wikipedia.org/wiki/Luhman_16#/media/File:PIA18003-NASA-WISE-StarsNearSun-20140425-2.png [credit: NASA/Penn State University]
Видео Brown Dwarfs: Crash Course Astronomy #28 канала CrashCourse
Показать
Комментарии отсутствуют
Информация о видео
Другие видео канала
Low Mass Stars: Crash Course Astronomy #29The Life and Death of Stars: White Dwarfs, Supernovae, Neutron Stars, and Black HolesTIMELAPSE OF THE FUTURE: A Journey to the End of Time (4K)The Last Light Before Eternal Darkness – White Dwarfs & Black DwarfsSizes of Stars and Sub-Stellar Objects: From Brown Dwarf to Red HypergiantNeutron Stars – The Most Extreme Things that are not Black HolesUranus & Neptune: Crash Course Astronomy #19The Oort Cloud: Crash Course Astronomy #22Deep Time: Crash Course Astronomy #45Neutron Stars: Crash Course Astronomy #32The Big Bang, Cosmology part 1: Crash Course Astronomy #42White Dwarfs & Planetary Nebulae: Crash Course Astronomy #30Saturn: Crash Course Astronomy #18Binary and Multiple Stars: Crash Course Astronomy #34Star Clusters: Crash Course Astronomy #35Stars: Crash Course Astronomy #26Black Holes: Crash Course Astronomy #33Exoplanets: Crash Course Astronomy #27The Largest Star in the Universe – Size ComparisonDark Matter: Crash Course Astronomy #41