WARNING: Don't challenge Dr Meghan Gray to a game of Scrabble - this video is about interplanetary travel and orbits. More links and info below ↓ ↓ ↓ Hohmann Transfer Orbits, Voyager Probes, and of course THAT Tesla. More videos with Dr Gray: http://bit.ly/Meghan_Playlist See our moon rocks and soil videos on Objectivity: http://bit.ly/Objectivity Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysymbols And Twitter at http://twitter.com/sixtysymbols This project features scientists from The University of Nottingham http://bit.ly/NottsPhysics Patreon: https://www.patreon.com/sixtysymbols Sixty Symbols videos by Brady Haran Animation by Pete McPartlan http://www.bradyharanblog.com Email list: http://eepurl.com/YdjL9 (*) the Earth version of Scrabble has only 2 Ys - but we were playing the Martian Edition.