3 ms·
Apparently it is about 22t of food per astronaut on a one-way trip to Mars. See https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8747021/ https://www.ncbi.nlm.nih.
by j_not_j 3y ago
Apparently it is about 22t of food per astronaut on a one-way trip to Mars.
See https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8747021/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8747021/
for a review article.
Summary: there are many risks, from menu fatigue, energy consumption vs expenditure (e.g. exercising), adverse effects of space travel from microgravity, long-term radiation exposure, metabolic stress, and so on.
- throwaway22032 3y agoWater is probably the major concern. Thinking about hiking/camping, with dehydrated food 3 calories per gram is fairly standard. 22 tons at 3 calories per gram is about 7.3 million calories. That's 3000 days at 2500cal/d. But when you're hiking you can just source water along the way. You can't do that on a Mars journey. Can you do it on Mars? edit: in response to the recycling comment - of course! doh! then it should be easier, no?
- philwelch 3y agoWater isn’t actually consumed, but rather cycles through the biosphere. The ISS recycles its water, and so would a Mars expedition.
- two_in_one 3y agoWater can be recycled easily. Like it's done on ISS.
- schiffern 3y ago> 22t of food per astronaut on a one-way trip to Mars That's not what your link says. It actually says: "It is estimated that a 3-year Mars mission with a crew of six would have a total energy expenditure of 12 megajoules per person per day, regardless of water requirements, and would carry 22 tons of water-containing food on the spacecraft"