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SE - stop firing the good guys
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2 votes
0 answers
75 views

What is the optimal planetary sunshade arrangement?

6 votes
1 answer
722 views

How close do gravitational 2-body hierarchy levels get?

1 vote
0 answers
101 views

How heavy is an orbital pogo stick?

4 votes
0 answers
37 views

Can Tisserand's parameter be modified to correct for perturbing eccentricity?

0 votes
1 answer
148 views

NTR performance of hydrazine compared to ammonia?

6 votes
1 answer
85 views

Important new additives to hypergolic hydrazine-based fuels since 1972?

21 votes
3 answers
2k views

Optimal depth for underground flyby?

9 votes
2 answers
555 views

Are 3 points on an orbit enough to determine the shape of it in practice?

4 votes
0 answers
89 views

Telescope in a crater? How different are the bowl shapes?

9 votes
1 answer
946 views

Is there a neat formula for hyperbolic Kentucky windage?

5 votes
1 answer
97 views

How do orbits around Jacobi ellipsoids behave?

4 votes
1 answer
113 views

What is the shape of the envelope of all orbits with velocity of equal magnitude at their intersection?

12 votes
3 answers
594 views

What image compression algorithm did the Voyagers use?

2 votes
1 answer
97 views

How reflective can laser sail coatings be?

7 votes
2 answers
164 views

Can I observe a Venus transit before 2117 from a spacecraft in the Earth-Moon neighbourhood?

3 votes
1 answer
405 views

What are the shortest orbital periods used for their repeat ground track properties?

4 votes
1 answer
295 views

Under what conditions can a non-resonant satellite stay hidden from an observer on the ground?

9 votes
3 answers
695 views

What is the highest number of impulses required for an optimal orbital transfer?

5 votes
1 answer
320 views

Why is the gas giant grand tour interval 175 years when the synodic period of Uranus and Neptune is 171 years?

6 votes
2 answers
292 views

Legality of nuclear debris field on the Moon?

5 votes
0 answers
162 views

When, if ever, did deep space probes start using encryption?

4 votes
0 answers
209 views

What do the RD numbers of Russian rocket engines mean?

3 votes
2 answers
251 views

Lunar landing in cotton candy?

3 votes
1 answer
214 views

Have capsule-free taxi spacecraft ever been seriously considered for non-emergency use?

2 votes
1 answer
82 views

Is the Low-Density Supersonic Decelerator scheduled for any upcoming Mars mission? Is the program still active?

24 votes
2 answers
3k views

Why do the contents of the Space Shuttle External Tank not match the mixture ratio of the engines?

12 votes
1 answer
797 views

How does tankage mass really scale?

5 votes
1 answer
215 views

What does a low thrust apoapsis raising look like?

8 votes
3 answers
3k views

How can I view the Voyager golden record images?

3 votes
1 answer
173 views

Can I push the atmosphere out of the way?