High Mass Stars: Crash Course Astronomy #31
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Massive stars fuse heavier elements in their cores than lower mass stars. This leads to the creation of heavier elements up to iron. Iron robs critical energy from the core, causing it to collapse. The shock wave, together with a huge swarm of neutrinos, blast through the star’s outer layers, causing it to explode. The resulting supernova creates even more heavy elements, scattering them through space. Also, happily, we’re in no danger from a nearby supernova. Crash Course Astronomy Poster: http://store.dftba.com/products/crashcourse-astronomy-poster -- Table of Contents Massive Stars Fuse Heavier Elements Up To Iron 1:15 Iron Uses High Amounts of Energy, Thus Making Stars Collapse 3:58 The Resulting Supernova Creates Even Heavier Elements 10:00 Relax, Something Else Will Kill You 9:04 -- 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 Blowing Bubbles http://chandra.harvard.edu/resources/animations/pne.html [credit: NASA/CXC/April Jubett] The Sizes of Stars http://www.eso.org/public/images/eso1030c/ [credit: ESO/M. Kornmesser] Red giants https://commons.wikimedia.org/wiki/File:Redgiants.svg [credit: Wikimedia Commons] Alpha Orionis http://imgsrc.hubblesite.org/hu/db/images/hs-1996-04-a-print.jpg [credit: A. Dupree (CfA), NASA, ESA] Sun and VY Canis Majoris https://commons.wikimedia.org/wiki/File:Sun_and_VY_Canis_Majoris.svg [credit: Wikimedia Commons] Witch Head Nebula and Rigel http://www.deepskycolors.com/archive/2009/11/16/witch-Head-Nebula-and-Rigel.html [credit: Rogelio Bernal Andreo] Layers of a massive star https://en.wikipedia.org/wiki/User:FT2/scc#/media/File:Massive_star_cutaway_pre-collapse_(pinned,_8M%2B).png [credit: Wikimedia Commons] NASA's Swift Reveals New Phenomenon in a Neutron Star http://www.nasa.gov/mission_pages/swift/bursts/new-phenom.html#.VcvAYflVhBd [credit: NASA's Goddard Space Flight Center] What is a black hole? http://www.nasa.gov/audience/forstudents/k-4/stories/nasa-knows/what-is-a-black-hole-k4.html [credit: NASA/CXC/M.Weiss] The Death of Stars http://www.spacetelescope.org/videos/hubblecast52a/ [credit: ESA/Hubble] Giant Mosaic of the Crab Nebula http://www.nasa.gov/multimedia/imagegallery/image_feature_460.html [credit: NASA, ESA, J. Hester (Arizona State University)] Hubble and Chandra spot a celestial bauble http://www.spacetelescope.org/images/heic1018b/ [credit: NASA, ESA, the Hubble Heritage Team (STScI/AURA), and NASA/CXC/SAO/J. Hughes] Vela Supernova Remnant http://www.glitteringlights.com/Images/Nebulae/i-pqWFzmt/O [credit: Marco Lorenzi] Spica [credit: Phil Plait] Cassiopeia A https://en.wikipedia.org/wiki/Cassiopeia_A#/media/File:Cassiopeia_A_Spitzer_Crop.jpg [credit: Oliver Krause (Steward Observatory) George H. Rieke (Steward Observatory) Stephan M. Birkmann (Max-Planck-Institut fur Astronomie) Emeric Le Floc'h (Steward Observatory) Karl D. Gordon (Steward Observatory) Eiichi Egami (Steward Observatory) John Bieging (Steward Observatory) John P. Hughes (Rutgers University) Erick Young (Steward Observatory) Joannah L. Hinz (Steward Observatory) Sascha P. Quanz (Max-Planck-Institut fur Astronomie) Dean C. Hines (Space Science Institute)] Sloshing Supernova http://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=11735 [credit: NASA's Goddard Space Flight Center Video and images courtesy of NASA/JPL-Caltech] Star Burst http://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=11447 [credit: NASA's Goddard Space Flight Center Video courtesy of ESA/Hubble/L. Calcada]
Comments
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beetlejuice? XD And I thought it would sound strange spoken out in german
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I am star stuff.
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5:09
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the implications of this for me only reaffirm GODs influence over everything it amazes me to the level of complexity that is needed to setup the conditions for the CREATION of life
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The biggest star is UY Scuti
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good.
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Just a bored business major with a dumb question strolling by this area of YouTube... isn't this all just theory based on how elements may behave under certain circumstances, conditions etc?
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"Energy is created."
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Its unbelievable that my body is a result of all those super and hyper giants exploding and even then I am so useless! I feel ashamed of myself.
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Crash Course👍🏽
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Phil,
Your videos are truly awesome, educational, well written and narrated and intelligently presented. I love your work. -
You really really got big hands...
And very nice explanation and demonstration -
wait at 3:24 is that dot our sun to scale. If so that's one GIANT star. What I would pay to go see that without dying xD
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Is UY Scuti and R136A larger than VY Canis Majoris?
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Hmm. Does that mean we could theoretically expect the next generation of stars to have different properties as more and more heavy elements become incorporated into their make up? More unique stars of compositions that we are currently unaware of?
If so, would that apply to new generations planets and life forms millennia from now? -
All heavy elements come from nuclear fussion from stars?
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Thank you, Dr.Plait. I just used this video as a follow-up to an explanation of heavy elements and supernovae. However, please, could you change the language to not say that energy is created? Sure, I know it's shorthand for "released," but it become long hand for "actually, energy is neither created nor destroyed, just like matter, and what Dr.Plait actually means is that energy is released, so disregard that part of the video I'm showing you help you remember facts about the formation of heavy elements." Thanks in advance and great job, really!
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