Question: How was space traval made. Would you ever change your job

Paul Higgins answered on 14 Nov 2012:

Space travel started about half a century ago when cosmonauts and astronauts used to ride in little pods on top of giant rockets. Then we moved on to shuttles, and now we are trying to design a space plane that can just take off, like a normal plane, and fly into space. The problem is that you have to get up to a fast enough speed to escape earth’s gravity, and it takes a lot of fuel to give you that much kinetic energy… But fuel is heavy, so there is a balance between how much fuel you need, but not having too much fuel so that you weigh yourself down.
I might change my job if an exciting one was offered to me, but I wouldn’t go out of my way to change it. I like being a researcher, so far!