When you've got to go, but you're out there in space, zipped up in a spacesuit, with no toilet in sight and a crew of other astronauts around, what do you do?  如果你在太空裹着宇航服时，迫切需要方便一下，但是周围看不到厕所又有一群宇航员在

Remarks by the President on the Loss of Space Shuttle Columbia My fellow Americans, this day has brought terrible news and great sadness to our country. At 9:00 a.m. this morning, Mission Control in Houston lost contact with our Space Shut

NASA has approved the launch of its Mars lander, InSight, for May 2018, to study the Red Planet's deep interior. 美国宇航局已确认，将于2018年5月发射火星着陆器，以深入研究这颗红色的星球。 The mission was originally scheduled to launch in M