uhoh
  • Member for 6 years, 1 month
  • Last seen this week
  • Taipei, Earth
1 answers
10 votes
20k views
5 bookmarks
What are reentry speeds of space vehicles?
4 answers
12 votes
20k views
7 bookmarks
Converting Orbital Elements to Cartesian State Vectors
4 answers
17 votes
19k views
4 bookmarks
Why are photos of satellites most often computer generated?
4 answers
28 votes
19k views
5 bookmarks
Is the SLS irrelevant if the Falcon Heavy launch is successful this year?
7 answers
20 votes
18k views
3 bookmarks
How stable would a Falcon 9 first stage be after it has landed on a drone ship?
2 answers
52 votes
16k views
7 bookmarks
Why is gold used in space technology to protect from heat radiation?
4 answers
91 votes
16k views
13 bookmarks
How did Apollo 16 capture this full photograph of the Moon's far side?
4 answers
37 votes
15k views
12 bookmarks
Effect of atmospheric drag on rocket launches and benefits of high altitude launch sites
3 answers
13 votes
14k views
4 bookmarks
Are there any benefits to launching from Vandenberg AFB instead of Cape Canaveral?
5 answers
42 votes
14k views
4 bookmarks
Why haven't more spacecraft/satellites been hit by debris?
7 answers
32 votes
13k views
6 bookmarks
How could a 90 m/s delta-v be enough to commit the space shuttle to landing?
5 answers
25 votes
13k views
5 bookmarks
Why does the ISS track appear to be sinusoidal?
3 answers
14 votes
13k views
3 bookmarks
Can you swim in space?
4 answers
16 votes
12k views
5 bookmarks
Why do so few satellites pass over the poles, and why do so many focus on the equator?
5 answers
37 votes
12k views
5 bookmarks
Is photography from a satellite good enough to make out a person on the ground?
1 answers
32 votes
12k views
3 bookmarks
What are the procedures aboard the ISS in the eventuality of a loss of a crew member?
10 answers
50 votes
12k views
18 bookmarks
Game for teaching basics of orbital mechanics
4 answers
28 votes
12k views
10 bookmarks
Is there any way to find and track Pioneer 10, 11, and Voyager 1, 2?
1 answers
4 votes
11k views
1 bookmarks
Falcon 9 g-level/acceleration profile
4 answers
5 votes
11k views
2 bookmarks
Sun synchronous orbit and LTAN
5 answers
25 votes
11k views
4 bookmarks
Could a helicopter fly on Mars?
2 answers
17 votes
11k views
4 bookmarks
How to calculate Delta V for lunar flyby
3 answers
17 votes
10k views
5 bookmarks
How much RF transmit power does DSN need to send commands to Voyager?
4 answers
16 votes
10k views
2 bookmarks
Was Hubble really related to spy satellites?
2 answers
12 votes
10k views
4 bookmarks
Would it be possible to "fall off" Phobos?
2 answers
8 votes
10k views
5 bookmarks
Will colonists on Mars have enhanced physical mobility relative to an Earth-normal environment?
4 answers
26 votes
10k views
3 bookmarks
Is there any advantage in launching spacecraft from a high latitude, or why was Plesetsk built so far north?
2 answers
4 votes
10k views
1 bookmarks
What is the maximum speed an ion engine can propel a spacecraft at?
7 answers
30 votes
9k views
5 bookmarks
Why weren't Saturn V and the Soviet N-1 Moon rockets made larger in order to simplify Lunar missions?
1 answers
26 votes
9k views
3 bookmarks
Which artificial satellites in lunar orbit are currently active?
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