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Questions tagged [iss]

Questions about the International Space Station, a habitable man-made low Earth orbit satellite whose first component was launched in 1998 and used to conduct experiments for a wide variety of research fields in a microgravity environment.

27
votes
4answers
16k views

What time zone is used on ISS to define a day?

What time zone is used on ISS to define when a day starts? Is it the same as mission control? Do Russian cosmonauts use a different time zone respect to European and American astronauts?
10
votes
1answer
702 views

Does ISS perform any commercial operations?

Other than accepting space tourists, that is. I mean, does the ISS perform any commissioned experiments for private-owned entities, manufacture products that require space conditions, produce ...
37
votes
3answers
12k views

Why decommission the ISS?

What concerns, besides orbit decay and continued cost of operation (and potentially, a critical failure) are the motivations behind decommissioning the ISS by 2020? I mean, I'm fairly sure it would be ...
21
votes
3answers
749 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 ...
19
votes
2answers
2k views

Is there an ISS replacement planned?

Are there plans for another space station when the ISS is deorbited or de-manned? What are the details of these plans, if any? Bonus: How would a space station be built without the Space Shuttle?
8
votes
1answer
693 views

Is the Nudelman-Rikhter gun installed on Zvezda module?

By having a gun on board, one can conduct military kinds of experiments. Exploring armoring approaches for spacecraft, warning systems for the personnel, orbital ballistic studies for the multi-body ...
15
votes
2answers
284 views

To what extent are the US modules of ISS based on the Spacelab design?

Various sources, for example the Spacelab wikipedia page, report that several modules used in American sector of the ISS are based on the Spacelab legacy. To what extent has its legacy been used? ...
43
votes
2answers
4k views

Why does the International Space Station produce so much methane?

According to NASA, roughly "1,000 pounds of methane are produced on International Space Station and dumped overboard as waste gas every year"[1]. It seems like an awful waste to just get rid of it. ...