After solving the problem of dining in space, astronauts need to think about the next natural step!
Here's an odd thing about weightlessness: if it were possible to live in the center of the earth we would be weightless there, too!
One giant leap for mars mission feasibility, as Mars500 nears the end of its 520 day 'journey'.
As you might expect, planning astronauts' diets requires special considerations. Learn more on this Moment of Science.