Why haven't we traveled to Mars already? Well, space travel can have some devastating effects on the human body! Get your limited edition Life Noggin t-shirt! ►►►►https://teespring.com/headspace Support Life Noggin on Patreon: https://www.patreon.com/LifeNogginStudios?ty=h Follow Us! https://twitter.com/LifeNoggin https://facebook.com/LifeNoggin Click here to see more videos: https://www.youtube.com/user/lifenoggin Life Noggin is a weekly animated educational series. Whether it's science, pop culture, history or art, we explore it all and have a ton of fun doing it. Life Noggin Team: Animation by Steven Lawson Director/Voice: http://lifenogg.in/patgraziosi Executive Producer: http://lifenogg.in/IanDokie Director of Marketing: http://lifenogg.in/JaredOban Head Writer: http://lifenogg.in/KayleeYuhas Sources: http://www.nasa.gov/hrp/bodyinspace http://hubblesite.org/hubble_20/downloads/hubble_topscience_lo-res.pdf https://science.nasa.gov/astrophysics/focus-areas/what-is-dark-energy http://www.aerospace.org/education/stem-outreach/space-primer/a-brief-history-of-space-exploration/ http://www.space.com/34210-elon-musk-unveils-spacex-mars-colony-ship.html https://www.britannica.com/science/bone-remodeling http://www.nasa.gov/audience/forstudents/5-8/features/nasa-knows/what-is-microgravity-58.html http://www.nasa.gov/audience/foreducators/postsecondary/features/F_Bones_in_Space.html http://www.nasa.gov/mission_pages/station/research/experiments/245.html http://www.space.com/8978-trip-mars-turn-astronauts-weaklings.html http://nsbri.org/the-body-in-space/ http://www.space.com/14876-astronaut-spaceflight-vision-problems.html https://nei.nih.gov/health/iih/intracranial http://www.aao.org/eye-health/news/nasa-space-flight-impacts-astronauts-eyes-vision http://phys.org/news/2016-01-body-space.html http://www.nasa.gov/mission_pages/station/research/experiments/1024.html http://www.space.com/25452-zero-gravity-affects-astro