Questions tagged [long-duration]

Questions about long-duration spaceflight.

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60
votes
3answers
6k views

Washing clothes in space: are there any technical challenges?

Currently, the ISS is resupplied with fresh clothes from the Earth. I remember reading a report on NTRS stating that the requirements for fresh clothes proved to be much higher than expected. Thus, ...
23
votes
8answers
3k views

What factors limit the lifetime of an unmanned spacecraft?

Other than fuel, what factors limit the lifetime of a spacecraft? For example, if someone wanted to send a spacecraft on a 100 year trip round the solar system and back to Earth, could it be done ...
21
votes
3answers
855 views

Does long-term residence on the ISS affect eyesight?

Life on a space station is very confined. For months on end, astronauts are kept in a structure that's about the size of a football field on the outside and much smaller on the inside. The nearest ...
139
votes
5answers
37k views

Nudism in space: Why wear clothes anyway?

Currently, doing laundry in microgravity is an unsolved engineering problem. The result is that clean clothes on the International Space Station have become a consumable resource. Clean clothes get ...
17
votes
3answers
1k views

Is artificial gravity feasible in manned long-term space exploration?

We know that it is possible for humans to stay physically in shape during long term space missions (see for example Valeri Polyakov who stayed on Mir for more than 14 months for one trip). However, ...
9
votes
2answers
993 views

How long could the shuttle remain docked to ISS and still capable of landing?

Soyuz remains docked to ISS for months at a time, then returns the crew to Earth. The longest the shuttle has stayed in orbit on any single mission is 17.5 days on mission STS-80 in November 1996 ...
5
votes
2answers
111 views

Would a biological resource-system be feasible for long-term manned flights?

Supposing a long-term manned flight is planned would a biological resource-system be considered as an option? Would a biological resource-system work or is a technical solution superior? Currently ...
11
votes
1answer
220 views

What psychological therapy is available to space travelers

Is there an 'on-call' person dedicated for psychological therapy of people traveling in space? Flights are getting longer and longer, and while isolation has been studied for space and certainly ...
8
votes
2answers
222 views

What would be the ideal hydroponic crops for long duration travels?

By "ideal" I mean most nutritious, less maintenance as possible, less space consuming, etc. I guess this could be for any long-duration flights, as a means of self sustenance in addition to supplies, ...
2
votes
1answer
770 views

Which is the longest distance traveled by a space craft?

Which is the longest distance traveled by a space craft? Manned or unmanned? I believe it's Voyager, but I am not sure about the distance it traveled or is still traveling. I believe the mission ...
1
vote
1answer
64 views

Shape Memory Metal Self Stablizing Solar Sail

Can the frame of a solar sail be made with shape-memory metals to contract in a way to maintain orientation to the Sun either in orbit or interplanetary? Would there be enough temperature difference ...