The Invisible Gas That Gave Us Galaxies

More than half of all the matter in the universe is out in the dark, "empty space." Although it s basically invisible, the intergalactic medium has a lot to tell us about the stuff we can see. Get 10% off today —WITH FREE WORLDWIDE SHIPPING—by going to http://ridge.com/SCISHOW and use code “SCISHOW” at check out. Host: Reid Reimers SciShow has a spinoff podcast! It s called SciShow Tangents. Check it out at http://www.scishowtangents.org ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Kevin Carpentier, Eric Jensen, Matt Curls, Sam Buck, Christopher R Boucher, Avi Yashchin, Adam Brainard, Greg, Alex Hackman, Sam Lutfi, D.A. Noe, Piya Shedden, Scott Satovsky Jr, Charles Southerland, Patrick D. Ashmore, charles george, Kevin Bealer, Chris Peters ---------- 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? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: https://arxiv.org/pdf/1709.09180.pdf https://www.nasa.gov/feature/goddard/2019/milky-way-raids-intergalactic-bank-accounts-hubble-study-finds https://www.space.com/what-happens-in-intergalactic-space.html https://www.knowablemagazine.org/article/physical-world/2019/intergalactic-medium-gas-galaxy http://www.spacedaily.com/reports/Astronomers_catch_wind_rushing_out_of_galaxy_999.html ------ Images: https://www.spacetelescope.org/images/heic0406a/ https://www.spacetelescope.org/videos/astro_bz/ https://www.eso.org/public/images/sunspectrum-noao/ https://www.eso.org/public/images/potw1649a/ https://www.eso.org/public/images/eso0920a/ https://www.eurekalert.org/multimedia/pub/146214.php https://www.eso.org/public/videos/eso50cosmology/ https://svs.gsfc.nasa.gov/10555 https://www.eso.org/public/images/eso1723a/ https://www.nasa.gov/feature/goddard/2019/milky-way-raids-intergalactic-bank-accounts-hubble-study-finds https://www.eso.org/public/images/potw1009a/ https://www.spacetelescope.org/images/opo1726b/ https://www.istockphoto.com/photo/many-receipts-gm1158445264-316443556 https://www.istockphoto.com/photo/penny-with-path-gm124436849-4124636 https://svs.gsfc.nasa.gov/10663