Start building your ideal daily routine with Fabulous. The first 100 people who click on the link will get 25% OFF Fabulous Premium: https://thefab.co/scishowspace4

When astronauts go into space, they're not always going alone.

Hosted By: Hank Green

SciShow is on TikTok! Check us out at   / scishow  

Support SciShow Space by becoming a patron on Patreon:   / scishowspace  

Huge thanks go to the following Patreon supporter for helping us keep SciShow Space free for everyone forever: GrowingViolet, Jason A Saslow, Heriberto Bustos, and David Brooks!


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:   / scishow  
Twitter:   / scishow  
Instagram:   / thescishow  

Sources:
https://www.nasa.gov/feature/factsan...
https://www.ncbi.nlm.nih.gov/pmc/arti...
https://www.nih.gov/newsevents/news...
https://www.nature.com/articles/s4146...
https://microbiomejournal.biomedcentr...
https://www.frontiersin.org/articles/...
https://cosmosmagazine.com/space/expl...
https://sfamjournals.onlinelibrary.wi...
https://theconversation.com/copperis...
https://www.esa.int/Science_Explorati...

Images

https://www.nasa.gov/imagefeature/20...
https://www.nasa.gov/feature/jpl/micr...
https://commons.wikimedia.org/wiki/Fi...
https://mars.nasa.gov/resources/24626...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://www.nasa.gov/mission_pages/st...
https://commons.wikimedia.org/wiki/Fi...
https://archive.org/details/s126e012088
https://www.nasa.gov/feature/predicti...