SciShow Tangents is still on a break, but we have another Enhanced Classics for you! This week, a rerun of Experiments in Space with a brand new Ask the Science Couch and Butt Fact!

Follow us on Twitter @SciShowTangents, where we’ll tweet out topics for upcoming episodes and you can ask the science couch questions! 

While you're at it, check out the Tangents crew on Twitter: Stefan: @itsmestefanchin Ceri: @ceriley Sam: @slamschultz Hank: @hankgreen

If you want to learn more about any of our main topics, check out these links:

[Truth or Fail]

Chicken Fat

https://www.nasa.gov/topics/aeronautics/features/aafex_biofuels.html

Bone loss

https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=187

Perfume

https://www.nasa.gov/audience/forstudents/9-12/features/spacescents_feature.html

https://spinoff.nasa.gov/spinoff2002/ch_1.html

[Fact Off]

Wake Shield Facility

https://ntrs.nasa.gov/search.jsp?R=19920014405

https://er.jsc.nasa.gov/seh/pg46s95.html

https://uwaterloo.ca/molecular-beam-epitaxy/about/what-epitaxy

https://science.nasa.gov/science-news/science-at-nasa/2002/03jan_bioniceyes

https://www.sciencedirect.com/science/article/abs/pii/S0042207X01003839

https://www.sciencedirect.com/science/article/abs/pii/S009457650000148X

Image: https://archive.org/details/STS069-724-095

Mouse sperm experiment

https://www.pnas.org/content/114/23/5988

http://iss.jaxa.jp/en/kiboexp/theme/second/pmlatter/spacepup/

[Ask the Science Couch]

Rocket thrust

https://www.grc.nasa.gov/www/k-12/UEET/StudentSite/engines.html

https://www.sciencelearn.org.nz/resources/390-rockets-and-thrust

https://www.researchgate.net/publication/228785798_The_merits_of_cold_gas_micropropulsion_in_state-of-the-art_space_missions

https://www.grc.nasa.gov/www/k-12/rocket/rktth1.html

[Butt One More Thing]

ISS Toilet