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costrom
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15 votes
1 answer
2k views

How was Skylab's orbit inclination chosen?

12 votes
1 answer
775 views

Why do GPS (but not GLONASS or Beidou) satellites have increasing eccentricity over time?

12 votes
3 answers
2k views

Did/does the US use statute or nautical miles to decide who gets astronaut wings?

8 votes
1 answer
476 views

Could the spherical aberration of Hubble have been solved using only software techniques?

7 votes
2 answers
2k views

What effect (if any) would leaving the cargo bay doors open have had during a shuttle reentry?

5 votes
2 answers
139 views

Does landing a Falcon 9 first stage affect the allowable launch azimuths?

4 votes
0 answers
101 views

Were Soviet missions to Skylab ever considered?

4 votes
1 answer
175 views

How is flyby distance estimated?

2 votes
0 answers
94 views

What is the scheduled launch date history for SLS EM-1?

2 votes
1 answer
99 views

Are there publicly-available non-amateur sources of TLEs other than Space-Track?

1 vote
2 answers
352 views

What is the shape of a space elevator?

1 vote
2 answers
252 views

Are solid-fueled launch vehicles faster to orbit than liquid-fueled ones?