Hey guys, I didn't really know where to put this and this seemed like the most logical place. Also sorry if there's already been a post like this, I tried searching and couldn't find anything. Anyway, onto the question. I'm sorta confused about some things to do with rockets and such. First of all, how fast would something have to be going when it left the ground to escape earth's gravitational pull and ride off into space? Secondly, why do people say that space is 62 miles above the ground when parts of our atmosphere reach up to 400km away? Thirdly(?), does anybody here know if NASA give scholarships to Universities in the UK? I've searched on their website and things but can't seem to find anything other than for schools in the US. Thanks in advance, Indy  Also, one more question. Do singularities have infinite mass? Because if they do wouldn't everything in the universe be pulled toward them at an infinite velocity?