Why Don't Comets Ever Have a Green Tail?

To get $5 off your own personalized Magic Spoon variety pack, head to https://magicspoon.thld.co/scishowspace_0122 and use code SCISHOWSPACE at checkout! There’s no question that comets have been regarded as some of the most beautiful things in the night sky for thousands of years. But why are their heads often green but never their tails? Hosted By: Reid Reimers SciShow is on TikTok! Check us out at https://www.tiktok.com/@scishow ---------- Support SciShow Space by becoming a patron on Patreon: https://www.patreon.com/SciShowSpace ---------- Huge thanks go to the following Patreon supporter for helping us keep SciShow Space free for everyone forever: GrowingViolet, Jason A Saslow! ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? SciShow Tangents Podcast: http://www.scishowtangents.org Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Instagram: http://instagram.com/thescishow ---------- Sources: https://www.eso.org/public/events/astro-evt/hale-bopp/comet-history-1/ https://spaceplace.nasa.gov/comets/en/ https://astronomy.swin.edu.au/cosmos/c/Cometary+Gas+Tail https://www.eurekalert.org/news-releases/938361 https://www.pnas.org/content/pnas/118/52/e2113315118.full.pdf Image Sources: https://commons.wikimedia.org/wiki/File:Lspn_comet_halley.jpg https://commons.wikimedia.org/wiki/File:Augsburger_Wunderzeichenbuch,_Folio_28.jpg https://commons.wikimedia.org/wiki/File:Comet_Hyakutake_by_Bill_Ingalls.jpg https://commons.wikimedia.org/wiki/File:Comet_Neowise;_July_2020.jpg https://spaceplace.nasa.gov/comets/en/ https://commons.wikimedia.org/wiki/File:Comet_NEOWISE_over_Ayvalık_Islands_Nature_Park.jpg https://www.nasa.gov/jpl/nasa-instrument-on-rosetta-makes-comet-atmosphere-discovery https://commons.wikimedia.org/wiki/File:Ultraviolet_Radiation_From_Hydrogen_Atoms_in_Coma_of_Comet_Hyakutake.png https://www.flickr.com/photos/nasawebbtelescope/51146589850 https://spaceplace.nasa.gov/comets/en/ https://www.jpl.nasa.gov/images/pia21749-comet-illustration-animation https://commons.wikimedia.org/wiki/File:Augsburger_Wunderzeichenbuch,_Folio_52.jpg https://www.istockphoto.com/photo/c2-molecule-gm179236697-25467346 https://www.istockphoto.com/photo/sky-full-of-stars-gm512250305-46845990 https://www.istockphoto.com/vector/acceleration-speed-motion-on-night-road-luminous-blurred-horizontal-lines-pink-and-gm1266830732-371489631 https://www.nasa.gov/feature/goddard/2021/slac-dragonfly https://commons.wikimedia.org/wiki/File:Comet_Hyakutake_from_Hubble.jpg https://www.storyblocks.com/video/stock/the-falling-comet-on-the-starry-sky-background-hyper-lapse-sglqvgpxvkd58b6hm https://commons.wikimedia.org/wiki/File:Augsburger_Wunderzeichenbuch,_Folio_70.jpg


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