#40Education
Astronauts need to know their mass while in orbit, but a normal scale would be free-falling around the Earth with them. So how do they measure their mass without gravity?\n\nWe're conducting a survey of our viewers! If you have time, please give us feedback: https://www.surveymonkey.com/r/SciShowSurvey2017\n\nHosted by: Michael Aranda\n----------\nSupport SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow\n----------\nDooblydoo thanks go to the following Patreon supporters: KSam Lutfi, Kevin Knupp, Nicholas Smith, Inerri, D.A. Noe, alexander wadsworth,\nسلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Bella Nash, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick Merrithew, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Fatima Iqbal, Justin Lentz\n----------\nLooking for SciShow elsewhere on the internet?\nFacebook: http://www.facebook.com/scishow\nTwitter: http://www.twitter.com/scishow\nTumblr: http://scishow.tumblr.com\nInstagram: http://instagram.com/thescishow\n----------\nSources:\nhttps://www.nasa.gov/mission_pages/station/research/experiments/640.html\nhttps://www.youtube.com/watch?v=qE4OoE93fX0\nhttps://www.youtube.com/watch?v=8rt3udip7l4\nhttp://www.thestargarden.co.uk/How-to-weigh-objects-in-space.html\nhttp://hyperphysics.phy-astr.gsu.edu/hbase/shm.html \nhttp://hyperphysics.phy-astr.gsu.edu/hbase/shm2.html \nhttp://blogs.esa.int/promisse/2012/02/10/measure-body-mass-in-space/ \n----------\nImages:\nhttps://www.nasa.gov/image-feature/astronaut-peggy-whitson-0\nhttps://www.nasa.gov/content/astronaut-chris-cassidy-in-stations-kibo-lab-0\nhttps://www.nasa.gov/mission_pages/station/research/experiments/SLAMMD2.jpg\nhttps://www.nasa.gov/mission_pages/station/research/experiments/SLAMMD3.jpg \nhttps://spaceflight.nasa.gov/gallery/images/station/crew-31/html/iss031e157943.html