Asteroids: Crash Course Astronomy #20
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Now that we’ve finished our tour of the planets, we’re headed back to the asteroid belt. Asteroids are chunks of rock, metal, or both that were once part of smallish planets but were destroyed after collisions. Most orbit the Sun between Mars and Jupiter, but some get near the Earth. The biggest, Ceres is far smaller than the Moon but still big enough to be round and have undergone differentiation. CORRECTION: In the episode we say that 2010 TK7 is 800 km away. However, 2010 TK7 stays on average 150 million kilometers from Earth, but that can vary wildly. Sorry about that! -- Table of Contents Asteroids Are Chunks of Rock, Metal, or Both 1:45 Most Orbit the Sun Between Mars and Jupiter 7:16 Ceres is Far Smaller Than the Moon, But Large Enough to be Round 3:43 -- 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 Timelapse of Asteroid 2004 FH's flyby http://en.wikipedia.org/wiki/File:Asteroid_2004_FH.gif [credit: NASA/JPL Public Domain] Asteroid Discovery Video https://www.youtube.com/watch?v=2k2vkLEE4ko [credit: Scott Manley - scottmanley1972@gmail.com] Inner Solar System http://en.wikipedia.org/wiki/File:InnerSolarSystem-en.png [credit: Wikimedia Commons] Kirkwood gaps http://commons.wikimedia.org/wiki/File:Kirkwood-gaps-as-disk.png [credit: Wikimedia Commons] Ceres, Earth & Moon size comparison http://en.wikipedia.org/wiki/File:Ceres,_Earth_%26_Moon_size_comparison.jpg [credit: NASA] Dawn Glimpses Ceres’ North Pole http://www.jpl.nasa.gov/news/news.php?release=2015-133 [credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA] Ceres cutaway http://commons.wikimedia.org/wiki/File:Ceres_Cutaway.jpg [credit: NASA, ESA, and A. Feild (STScI)] Bright Spot on Ceres Has Dimmer Companion http://www.jpl.nasa.gov/spaceimages/details.php?id=PIA19185 [credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA] Vesta http://en.wikipedia.org/wiki/4_Vesta#/media/File:Vesta_full_mosaic.jpg [credit: NASA/JPL-Caltech/UCAL/MPS/DLR/IDA] Lutetia http://en.wikipedia.org/wiki/21_Lutetia#/media/File:Lutetia_closest_approach_(Rosetta).jpg [credit: ESA] Gaspra http://commons.wikimedia.org/wiki/File:Galileo_Gaspra_Mosaic.jpg [credit: NASA] Steins http://neo.ssa.esa.int/image/image_gallery?uuid=db747cf5-9d21-405e-bcdb-e70fe475edc9&groupId=10157&t=1340734455649 [credit: ESA/Osiris] Mathilde http://neo.jpl.nasa.gov/images/mathilde1.jpg [credit: NEAR Spacecraft Team, JHUAPL, NASA] Ida http://en.wikipedia.org/wiki/243_Ida#/media/File:243_ida_crop.jpg [credit: NASA/JPL] Kleopatra http://apod.nasa.gov/apod/ap000510.html [credit: Stephen Ostro et al. (JPL), Arecibo Radio Telescope, NSF, NASA] An artist's conception of two Pluto-sized dwarf planets in a collision around Vega. http://en.wikipedia.org/wiki/Methods_of_detecting_exoplanets#/media/File:Massive_Smash-Up_at_Vega.jpg [credit: NASA/JPL-Caltech/T. Pyle (SSC)] Itokawa http://apod.nasa.gov/apod/ap140209.html [credit: ISAS, JAXA] An artist's illustration showing two asteroid belts and a planet orbiting Epsilon Eridani http://en.wikipedia.org/wiki/Epsilon_Eridani#/media/File:NASA-JPL-Caltech_-_Double_the_Rubble_(PIA11375)_(pd).jpg [credit: NASA/JPL-Caltech] Near-Earth Asteroids http://www.jpl.nasa.gov/images/asteroid/20130204/asteroid20130204-full.jpg [credit: NASA/JPL-Caltech] Lagrange Points Diagram http://en.wikipedia.org/wiki/Trojan_(astronomy)#/media/File:Lagrange_very_massive.svg [credit: Wikimedia Commons] TK7 http://en.wikipedia.org/wiki/2010_TK7#/media/File:PIA14405-full_crop.jpg [credit: NASA/JPL-Caltech/UCLA] 165347 Philplait http://www.slate.com/content/dam/slate/blogs/bad_astronomy/2014/01/20/asteroidphilplait_panstarrs.jpg.CROP.original-original.jpg [credit: Larry Denneau/Pan-STARRS via Amy Mainzer]
Comments
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I LOVE THIS CHANNEL
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this is my favorite show on youtube
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thats so cool how he discovered his own astroid
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Isn't Amy that one astronomer from Ready Jet Go?
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Ceres' craters are filled with salt not ice. That is what the shiny stuff are.
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"The universe is under no obligation to adhere to our expectations" my favourite part in the whole series so far
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Where the frack is the Pluto episode
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Fav crash course Ceres
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3:15 YEAY! Starfox! lol
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I love phil !!!!!
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good to know u have a astroid name on urs... congrats!!
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00:52 !!!NEWS FLASH!!! " The planet between Mars, and Jupiter is NIBURU.". HAHAHAHA NIBURU XO)XO) HAHAHA..
Yes, from the IDIOTS A.K.A. DONALD TRUMP or Hillary Clinton SUPPORTERS. comes " Planet Niburu ".. Yes, these are THE SAME PEOPLE that in the FREAKING XXI century still think that: " The earth is flat ". The same MORONS who were convinced by an ex Playboy model HO to stop vaccinating their children because she says that: " Vaccines , to prevent childhood illnesses,such as Measles , can affect the child's mind"... After all, who knows more about childhood illness prevention and their side effects ??.. Individuals who have spent the ENTIRE professional lives devoted to the study, and eradication of these illnesses , or a ne'er-do-well-RAPIDLY AGING 57UT/H0BA6 whose only claim to fame was showing her now SA661N6 naughty bits to the world??... Oh, if these are my choices, " I will ALWAYS LISTEN to The RAPIDLY AGING 57UT/H0BA6 whose only claim to fame was showing her now SA661N6 naughty bits to the worldnamed
Jenny W h 0r3 carthy ".. .. COME ON NIBURU believing, Donald Chump - Hill Hill supporting, Jenny
W h0r3carthy advice taking people USE YOUR GRAY MATTER AND THINK.. !!! THINK DARN IT!!! -
Is Ceres an asteroid or also a dwarf planet? I'm confuse :(
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165347Philplait !!! Awesome !!!!
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Aten/Atin is ours in my language
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did i see star bits?
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What happens when An Asteroid collides with Earth ?
Read about it in DOOMS DAY
11m 33sLenght
6824Rating