How much food would we need to live in space?

Question

!!!!!!for 2 YEARS!!!!!

Answer 1

Same as on the earth. Space doesnt change your physical metabolism.

Answer 2

The same as for two years on earth. An average human body needs 100W of power just to keep the heart beating, the blood flowing, the body temperature constant and the brain working. An average human body doing light work needs 110W. An average human body doing a good workout needs 220W. A more than average human body winning the Tour de France needs approx. 300-400W. Even the most trained athlete can not keep that level of work up for more than six hours a day. So on average a human can not consume much more than 150-180W worth of power in form of chemical energy aka food. This amounts to between some 2000kCal and some 3000kCal. Pretty much everything beyond that goes into body fat.

Since I would consider being an astronaut light physical work, they won't need more than Dad needs when working in the office.

Answer 3

The same amount of food you would need to live on Earth for 2 years. The only differences are:
- you'd have to bring it all with you (no grocery stores in space)
- you'd need someplace to store it all (if you kept it outside the ship on the shadow side away from sunlight it would stay frozen)

Answer 4

actually, less that would would need on earth. because on earth your muscles are constantly using energy just keeping you from collapsing. in space thats not a problem, although astronauts work out a ton in space so they dont loose too much muscle mass. so if you ignore that whole "working out" idea then you would need less than you would on earth.

Answer 5

Hi. If you could reduce your calorie intake by half, then about 1,000 calories would do it.