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2 votes
3 answers
199 views

Why can't NASA launch Artemis (SLS/Orion) as often as SpaceX is launching Starship?

3 votes
2 answers
2k views

Why didn't NASA launch communications relay satellites outside the asteroid belt to communicate easily with interstellar satellite?

4 votes
2 answers
2k views

Will there be another joint International Space Station (ISS) after the current is retired?

5 votes
3 answers
498 views
+100

Most fuel-efficient deorbit from geostationary

9 votes
2 answers
617 views

Why are there so many visible cables on the exterior of the ISS?

1 vote
1 answer
65 views

How to calculate a Hohmann transfer when the target is moving retrograde

2 votes
1 answer
83 views

Why did MR-3 and MR-4 perform a retrofire?

6 votes
2 answers
828 views

Why does the Falcon 9 first stage perform a burn at 60 km altitude?

14 votes
2 answers
2k views

Why is the Space Shuttle's External Tank fuelled through the Orbiter's main engine plumbing system?

3 votes
0 answers
144 views

What would have prevented a person from firing a rifle at the space shuttle during launch?

-2 votes
0 answers
22 views

Could we be watched through the other side of black holes (e.g., M87 and Sgr A*) and could they be using Very-long-baseline interferometry for that?

1 vote
0 answers
27 views

Recorded EM frequencies for deep impact experiment

8 votes
1 answer
3k views

Calculations Apollo astronauts were trained to do by hand if loss of guidance computer and/or data & coms link to Earth?

4 votes
0 answers
70 views

How much time does the ISS require in "non value adding activities"?

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