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2 votes
1 answer
275 views

Vandenberg AFB SLC 6 layout

-1 votes
0 answers
43 views

How does human sleep differ on Earth, inside a spacecraft, and during EVA?

8 votes
0 answers
68 views

Why do multiple parachutes have stable spacing rather than bunching together?

57 votes
7 answers
7k views

What technological breakthroughs were required to land booster stages?

13 votes
1 answer
2k views

How does the landing accuracy of Dragon (under parachutes) compare to Soyuz?

8 votes
1 answer
160 views

Has densified hydrogen ever been used as a rocket fuel?

6 votes
2 answers
1k views

What is boil-off and how to stop it from happening in the vacuum of space?

3 votes
1 answer
1k views

Should there be black crosses from the Réseau plate in this Apollo mission photograph? If so, where are they?

19 votes
4 answers
7k views

How is it known that asteroid 2011 UW158 has so much platinum?

2 votes
0 answers
131 views

Practical rate (e.g. kg/day) that carbon could be harvested from CO2 in the Martian atmosphere and climate?

6 votes
3 answers
4k views

Would capture of a uranium-rich asteroid open new possibilities?

2 votes
1 answer
190 views

What are mass constraints to mine the moon causing significant changes to orbital dynamics either tidal forces?

3 votes
1 answer
92 views

Are there substances that can effectively be mined from asteroids that can be used for ion thrusters?

7 votes
2 answers
865 views

What Platinum minerals are expected to be found in Asteroids?

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