uhoh
  • Member for 6 years, 1 month
  • Last seen this week
  • Taipei, Earth
2 answers
13 votes
2k views
1 bookmarks
What is this gap in the GNSS satellite trajectories?
2 answers
25 votes
6k views
2 bookmarks
What spacecraft control is Margaret Hamilton pressing in this picture?
1 answers
6 votes
494 views
1 bookmarks
What Platinum minerals are expected to be found in Asteroids?
2 answers
8 votes
430 views
1 bookmarks
Have there been any probes launched that were actually clusters of probes?
2 answers
4 votes
493 views
1 bookmarks
Are not crash landings on Mars violating the Planetary Protection rules?
1 answers
4 votes
2k views
2 bookmarks
C3 calculation in interplanetary missions
3 answers
32 votes
5k views
4 bookmarks
This orbit looks wrong near a Lagrange point. Is it?
1 answers
2 votes
2k views
1 bookmarks
How can I compute the attitude of a satellite given its yaw, pitch, roll, and velocity?
1 answers
17 votes
2k views
3 bookmarks
What are these enclosed regions on the Mission Control Center map?
4 answers
20 votes
3k views
4 bookmarks
Reason for different "cone angles" of different space capsules?
1 answers
32 votes
4k views
3 bookmarks
Why did NASA set up a computing facility in Bermuda in the Mercury epoch?
3 answers
7 votes
1k views
2 bookmarks
How useful is the Interplanetary Transport Network?
1 answers
10 votes
1k views
2 bookmarks
Finding accurate periapse rendezvous radius using interplanetary Lambert solver
1 answers
11 votes
569 views
1 bookmarks
3-Body Simulation and Accuracy of Lambert Interplanetary Solver
3 answers
16 votes
23k views
6 bookmarks
How to calculate delta-v required for a planet-to-planet Hohmann transfer?
5 answers
37 votes
12k views
5 bookmarks
Is photography from a satellite good enough to make out a person on the ground?
2 answers
6 votes
698 views
1 bookmarks
Frequency and modulation mode(s) for the SpaceX Tesla roadster mass in space
1 answers
1 votes
79 views
1 bookmarks
Applying secondary orbital perturbation effects
2 answers
4 votes
883 views
2 bookmarks
Which LEO missions are currently supported by NASA's DSN (and why)?
1 answers
7 votes
409 views
3 bookmarks
How to optimize time of ignition for an on-orbit burn and/or coast phase on ascent?
4 answers
38 votes
6k views
11 bookmarks
What uses would the Aldrin-Cycler have?
2 answers
8 votes
2k views
1 bookmarks
Could you launch rocks from the Moon to hit Earth?
1 answers
11 votes
1k views
5 bookmarks
Improvements to script for Finite Burn Trajectory Optimization with MATLAB
1 answers
19 votes
5k views
4 bookmarks
How often does the ISS orbit align with the day/night terminator?
1 answers
15 votes
896 views
1 bookmarks
How did Goddard's rocket reach 41 feet altitude in under 2.5 seconds?
2 answers
3 votes
523 views
3 bookmarks
Orbit Maneuvering
1 answers
5 votes
163 views
1 bookmarks
In what circumstance would it be useful for a satellite’s angular velocity to differ from its reference frame’s angular velocity?
2 answers
3 votes
368 views
1 bookmarks
Earth-Mars Radio Blackout: Is it possible to define an extended solar radius to solve this as a geometric problem?
1 answers
9 votes
1k views
1 bookmarks
Mars Vacuum-blimp Feasability
4 answers
14 votes
2k views
2 bookmarks
Why are rocket mass on the launch pad and payload mass to LEO not strongly correlated?
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