Add Yahoo as a preferred source to see more of our stories on Google. Cancer cells are more hardy in the low-gravity conditions of space. koto_feja/iStock via Getty Images Plus As space travel gains ...

Some of the first experiments in space dealt with gravity and weightlessness. They were somewhat simple studies to test the new environment. Alan Shepard was the first man to hit a golf ball on the ...

Deep space is most likely going to be humanity’s final frontier, and space travel will undoubtedly become much more common in the future. However, space is a very hostile environment not only because ...