What are white dwarfs? (Astronomy)

What are white dwarfs? (Astronomy)

White dwarfs are dead stars that continue to glow because of heat, not nuclear fusion. Most stars in our universe will end up as a white dwarf star. Join us to learn how white dwarfs are made, what they’re like, how long they’ll shine, and how astronomers detect them. ⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫ We highly recommend the Astronomy textbook “Universe” by Roger Freedman et al: Universe 9th Edition http://amzn.to/2so6Ums Universe 10th Edition http://amzn.to/2tfBjUe Shop Amazon Used Textbooks - Save up to 90% http://amzn.to/2pllk4B ⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫ Be sure to subscribe so you don't miss videos from Socratica! http://bit.ly/1ixuu9W And please share with all your friends! That helps us grow. :) ⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫ If you'd like to support more great educational videos from Socratica, please consider becoming our Patron on Patreon! https://www.patreon.com/socratica ⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫ Hosted by Liliana de Castro Written and Produced by Kimberly Hatch Harrison & Michael Harrison

What is a Black Hole? -- Black Holes Explained

What is a Black Hole? -- Black Holes Explained

Black Holes are weird and unusual objects in space. What are they like? How are they made? Are they even real? Join us to find out! You can jump to chapters in our video here: 1:03 History of Black Holes 1:49 Theory of Relativity by Einstein - Spacetime 3:12 Are black holes real? 3:48 Finding black holes 4:13 Binary Stars 4:54 Schwarzschild Radius and the Event Horizon 5:24 Finding the mass of a black hole 5:56 Stellar and supermassive black holes 6:44 Angular momentum 7:37 The Ergosphere 8:09 Electric Charge of a black hole 8:42 No Hair Theorem 9:04 Inside a black hole 10:09 Current research topics ⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫ We highly recommend the Astronomy textbook “Universe” by Roger Freedman et al: Universe 9th Edition http://amzn.to/2so6Ums Universe 10th Edition http://amzn.to/2tfBjUe Shop Amazon Used Textbooks - Save up to 90% http://amzn.to/2pllk4B ⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫ Be sure to subscribe so you don't miss videos from Socratica! http://bit.ly/1ixuu9W And please share with all your friends! That helps us grow. :) ⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫ If you'd like to support more great educational videos from Socratica, please consider becoming our Patron on Patreon! https://www.patreon.com/socratica ⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫ Hosted by Liliana de Castro Written and Produced by Kimberly Hatch Harrison & Michael Harrison Tweet this video! Here's a great intro to Black Holes: http://bit.ly/1P2rsal

What are neutron stars? (Astronomy)

What are neutron stars?  (Astronomy)

Stars are not eternal and unchanging - they are born, live their lives, and then die. The way a star dies depends on its mass. A low mass star ends as a white dwarf. A high mass star becomes a black hole. But in between, a star becomes a neutron star. In this video we talk about which stars become neutron stars, and the physics behind their formation. ⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫ We highly recommend the Astronomy textbook “Universe” by Roger Freedman et al: Universe 9th Edition http://amzn.to/2so6Ums Universe 10th Edition http://amzn.to/2tfBjUe Shop Amazon Used Textbooks - Save up to 90% http://amzn.to/2pllk4B ⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫ Be sure to subscribe so you don't miss videos from Socratica! http://bit.ly/1ixuu9W And please share with all your friends! That helps us grow. :) ⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫ If you'd like to support more great educational videos from Socratica, please consider becoming our Patron on Patreon! https://www.patreon.com/socratica ⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫⧫ Hosted by Liliana de Castro Written by Michael Harrison Produced by Kimberly Hatch Harrison

Brown Dwarfs: Crash Course Astronomy #28

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]

The Last Star in the Universe – Red Dwarfs Explained

The Last Star in the Universe – Red Dwarfs Explained

The last star in the universe will be a red dwarf. Red dwarfs in general might be great places to look for aliens – or planets for humans to find a new home after our solar system has died. Support us on Patreon so we can make more stuff (and get cool wallpapers): https://www.patreon.com/Kurzgesagt?ty=h Get the music of the video here: https://epicmountainmusic.bandcamp.com/track/red-dwarfs https://soundcloud.com/epicmountain/red-dwarfs http://epic-mountain.com Or follow us on social media or reddit: http://kurzgesagt.org https://www.reddit.com/r/kurzgesagt https://twitter.com/Kurz_Gesagt https://www.facebook.com/Kurzgesagt THANKS A LOT TO OUR LOVELY PATRONS FOR SUPPORTING US: (This video has been uploaded on the road, Patrons will be added on Monday!!) The Last Star in the Universe – Red Dwarfs Explained Help us caption & translate this video! http://www.youtube.com/timedtext_cs_panel?c=UCsXVk37bltHxD1rDPwtNM8Q&tab=2

Top Videos -  loading... Change country
Load 5 more videos
 
Nelze přehrát
00:00/00:00
  •  
  •  
  •  
  •  
  •  
  •  
  •  
ZAVŘÍT
ZAVŘÍT
ZAVŘÍT