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Top Questions

2 votes
0 answers
26 views

Orange lines coming from rocket engine nozzle?

1 vote
1 answer
180 views

Questions about Orbital Propagation

0 votes
0 answers
17 views

Orbital Angular Momentum on STK

3 votes
1 answer
266 views

Images of the DART impact on Asteroid Dimorphos other then DART images

9 votes
1 answer
64 views

Could Bepi-Colombo image the Messenger impact site?

3 votes
0 answers
44 views
+50

Which were the more than 60 (!) candidate locations for the Mars 2020 rover?

1 vote
1 answer
84 views

Satellite position using 2 station ranging

4 votes
1 answer
143 views

Draper Semianalytical Satellite Theory (DSST) C/C++ version

2 votes
1 answer
50 views

How to find cost data for commercially available spacecraft components?

3 votes
0 answers
37 views

Dilution of precision in different coordinates

13 votes
2 answers
2k views

What caused the jitter in the DART video as it approached Dimorphos?

3 votes
0 answers
111 views

What would have happened if DART failed to hit Didymoon?

2 votes
1 answer
37 views

Would planetary quarantine have to be used for asteroid mining missions?

23 votes
2 answers
4k views

When Artemis runs out of rollbacks

5 votes
2 answers
1k views

Developing intuition about altitude and velocity in multi stage rockets

1 vote
0 answers
42 views

What will be more important for the first NASA led human mission to Mars, the exploration of important science targets or the mining of water ice?

6 votes
1 answer
164 views
+50

How to protect Mars/Moon mission crews against meteors?

5 votes
1 answer
118 views

Have there been any rockets whose payload fairings consisted of more than two parts?

2 votes
2 answers
72 views

How to calculate the ECEF coordinates of a satellite given its elevation and azimuth angle, plus the coordinates of a reference object on Earth

21 votes
3 answers
2k views

Optimal depth for underground flyby?

1 vote
0 answers
73 views

What are better ways to deliver heat directly to propellant in a Thermal Rocket design for use in launch than UV such as in the Nuclear Lightbulb?

0 votes
0 answers
40 views

Pre burner design for cryogenic propellants [closed]

9 votes
2 answers
2k views

How can we source potassium fluoride outside of Earth?

8 votes
1 answer
689 views

On the LM, what is the difference between ABORT and ABORT STAGE?

8 votes
0 answers
97 views

Dimorphos natural orbit variability vs DART impact

2 votes
1 answer
89 views

If the pseudorange is not fixed, how does a receiver lock/fix onto a satellite signal?

10 votes
2 answers
2k views

Will SLS be launched as often as the space shuttle was?

2 votes
0 answers
86 views

How do different stages attach to each other?

0 votes
1 answer
366 views

Can DART/Dimorphos impact be seen with naked eye?

4 votes
0 answers
169 views

Was DART meant to impact dead center?

0 votes
1 answer
36 views

How to convert TLE data into state vectors in ITRF?

9 votes
1 answer
527 views

What is the area of the SSME nozzle knowing only thrust at sea level and in vacuum?

0 votes
0 answers
39 views

A hybrid micropropulsion system for CubeSats

12 votes
1 answer
2k views

What happened to Mariner 2 after it flew by Venus?

14 votes
2 answers
5k views

Are there any short-term survivable locations in the solar system, outside of Earth?

1 vote
2 answers
134 views

Is the Artemis Missions direct ascent?

3 votes
2 answers
85 views

what is 'f' (true anomaly) for in the orbital inclination change equation

0 votes
1 answer
138 views

How to transport C and N₂ from Mars to the Moon?

6 votes
1 answer
2k views

Why does JWST make images of planets from solar system?

12 votes
1 answer
3k views

Can a meteor shower have a interval greater than 1 year?

1 vote
3 answers
77 views

Propellant Density Calculation for LOX/Kero

3 votes
1 answer
1k views

What happened to the Apollo moon rovers? [duplicate]

2 votes
0 answers
106 views

What is the optimal acceleration for a direct ascent to the moon? [duplicate]

9 votes
1 answer
5k views

Why are Moon Rockets (Saturn V, N1) so much bigger than the Titan IIIE?

0 votes
1 answer
260 views

Would Artemis 1 have blown up on the pad if NASA had been unaware of (or ignored) the errors that resulted in the launches being aborted? [closed]

7 votes
1 answer
850 views

Nitrogen trifluoride as a high density oxidiser

14 votes
2 answers
3k views

Which regulatory agency (if any) is in charge of investigating civilian rocket anomalies?

2 votes
2 answers
152 views

best way to generate electricity on any planet's dark side


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