| Its mission is not human exploration for its own sake, nor off-planet colonisation, yet human spaceflight consumes a large chunk of the budget. |
| This should be a good time for the young suborbital spaceflight industry. |
| During spaceflight astronauts lose muscle mass and function as a consequence of a lack of gravity. |
| In 1965 he became to first man to go on a spacewalk, and he still follows events in spaceflight from the sidelines. |
| In the early years of human spaceflight, some worried that women would not have their periods safely in microgravity. |
| It operates microgravity science payloads for ground and spaceflight research. |
