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50 votes
7 answers
79k views

How would it be possible to kick start Mars's magnetic field?

43 votes
2 answers
4k views

Legality of asteroid mining

30 votes
7 answers
4k views

What technological hurdles prevent the development of a space gun?

24 votes
4 answers
5k views

How was magnetic tape decay prevented in Voyager 1?

17 votes
2 answers
930 views

How would a probe land on Europa?

17 votes
4 answers
4k views

How long can Philae stay "alive"?

14 votes
1 answer
1k views

Could Jupiter's tidal forces be used to generate energy?

13 votes
3 answers
749 views

What's the public availability of data gathered by NASA probes?

12 votes
2 answers
531 views

What were Prince Sultan's duties in STS-51-G?

10 votes
2 answers
1k views

What language does ISRO use for radio communication?

10 votes
1 answer
681 views

Does NASA have any documented procedures in the event of discovery of extraterrestrial life?

10 votes
1 answer
195 views

Would we be able to detect signs of life from the contents of a water plume?

7 votes
2 answers
524 views

Does building a vessel to work in vacuum also make it watertight?

7 votes
1 answer
120 views

How is WISE continuing to work without coolant?

5 votes
1 answer
301 views

Could the Mars One rovers be used to carry personnel?

5 votes
2 answers
711 views

Have extremophiles and anaerobic extremophiles been studied in space?

3 votes
0 answers
90 views

Why does thrusting towards a target in orbit make you go farther away from it? [duplicate]

2 votes
0 answers
24 views

How would we sterilize a probe to look for life? [duplicate]