Not the most mind-blowing facts, just recent ones that come to mind: 1. The volume of water and air on Earth, compared to the Earth: http://www.sciencephoto.c

Not the most mind-blowing facts, just recent ones that come to mind: 1. The volume of water and air on Earth, compared to the Earth: http://www.sciencephoto.com/images/download_lo_res.html?id=690550330 http://www.sciencephoto.com/images/download_lo_res.html?id=6... 2. The relative sizes of Earth, Sun and the biggest known stars, and the fact that a passenger airplane would take 11,000 years to circle the biggest known star: http://www.vplay.ro/watch/qtg8z7kg/ http://www.vplay.ro/watch/qtg8z7kg/