The Invisible Gas That Gave Us Galaxies

Get 10% off today —WITH FREE WORLDWIDE SHIPPING—by going to http://ridge.com/SCISHOW and use code “SCISHOW” at check out.

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.

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