Check out MinuteEarth: http://bit.ly/Xkxwmu Become a Vsaucer: http://bit.ly/POIaN7 For cool things every day: http://www.twitter.com/tweetsauce Tools & Links: Gravitational force calculator: http://www.wsanford.com/~wsanford/calculators/gravity-calculator.html Solar Scope: http://www.solarsystemscope.com/ Gravity simulator: http://www.nowykurier.com/toys/gravity/gravity.html Celestia (3D space simulator): http://www.shatters.net/celestia/ Quantum Tunneling (MinutePhysics): https://www.youtube.com/watch?v=cTodS8hkSDg Gravitational force between people: http://www.reddit.com/r/askscience/comments/15q9tx/which_has_more_gravitational_pull_on_me_girl/ How the sun might ACTUALLY die [VIDEO]: https://www.youtube.com/watch?v=21RkSui1cG8 Sun disappearance links: http://www.popsci.com/node/24698 http://scienceblogs.com/startswithabang/2010/07/12/q-a-how-long-would-we-have-if/ http://unitedcats.wordpress.com/2008/07/24/what-would-happen-if-the-sun-disappeared/ http://curious.astro.cornell.edu/question.php?number=707 http://www.newscientist.com/blog/lastword/2004/05/put-that-light-out.html http://www.physicsforums.com/showthread.php?p=4079676 Light travel-time between planets: http://www.pbs.org/seeinginthedark/astronomy-topics/light-as-a-cosmic-time-machine.html Ahad (light from galaxy): http://images2.wikia.nocookie.net/__cb20090709115119/firstarktoalphacentauri/images/7/76/Ahads_constant_refereed_paper.pdf A Pail of Air STORY: http://www.baenebooks.com/chapters/0743498747/0743498747___6.htm Hydrothermal vents VIDEO: https://www.youtube.com/watch?v=RaUcJ3CdTSE Extremophiles in general: http://en.wikipedia.org/wiki/Extremophile Neil Degrasse Tyson book that includes a discussion of Earth's geothermally resiliant life: http://www.amazon.co.uk/Death-Black-Hole-Cosmic-Quandaries/dp/0393330168 *********** MUSIC BY: null