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Top Questions

6 votes
1 answer
163 views
+50

How to protect Mars/Moon mission crews against meteors?

1 vote
0 answers
20 views

Orange lines coming from rocket engine nozzle?

3 votes
0 answers
44 views
+50

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

9 votes
1 answer
63 views

Could Bepi-Colombo image the Messenger impact site?

1 vote
1 answer
157 views

Questions about Orbital Propagation

0 votes
0 answers
17 views

Orbital Angular Momentum on STK

7 votes
3 answers
2k views

How can Artemis 1 take so much longer for Earth-Lunar transit than the Apollo missions did?

0 votes
0 answers
757 views

What is the best fuel for bottle rocket? [closed]

2 votes
1 answer
50 views

How to find cost data for commercially available spacecraft components?

1 vote
1 answer
84 views

Satellite position using 2 station ranging

12 votes
4 answers
1k views

How does Spinlaunch manage the counterweight right after launch?

2 votes
0 answers
126 views

Why will the next missions to Mars not search for past life where once deep-water hydrothermal vents were?

3 votes
1 answer
266 views

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

3 votes
0 answers
37 views

Dilution of precision in different coordinates

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

10 votes
6 answers
2k views

When has hydrogen peroxide been used in rocketry?

7 votes
2 answers
406 views

How (the heck) was coherent synthetic aperture radar (SAR) implemented using photographic emulsion aboard Apollo 17?

4 votes
1 answer
142 views

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

0 votes
1 answer
67 views

What would the TLE data (Mean Motion, Eccentricity, Inclination, RAAN, Argument of Pericenter) of GEO and PO be like?

7 votes
0 answers
218 views

Tory Bruno mentioned "unsolvable combustion instability" of "large methane engines". What, why, how?

8 votes
0 answers
175 views

What are the negatives associated with Thrust-augmented Nozzles aka Afterburning Rocket Engines?

3 votes
0 answers
110 views

What would have happened if DART failed to hit Didymoon?

2 votes
1 answer
291 views

long sequence of satellites moving west to east?

13 votes
2 answers
2k views

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

56 votes
7 answers
6k views

What technological breakthroughs were required to land booster stages?

1 vote
1 answer
92 views

What is the propellant consumption rate for Soyuz?

8 votes
3 answers
524 views

Could an Apollo Lunar Module have landed and returned without Earth assistance?

2 votes
2 answers
148 views

Orbital Chinese firework-cluster

13 votes
1 answer
1k views

Why NASA's sudden renewed (apparently) interest in Wax hybrid engines? Which property is so attractive now?

5 votes
1 answer
310 views

Why was Apollo 17 considered to have "achieved a very successful geological survey"?

1 vote
2 answers
259 views

Looking for figures for contemporary interstellar engine options

2 votes
2 answers
203 views

Was it possible for the Chinese to send a rocket using gunpower past the Karman line?

9 votes
1 answer
495 views

Why would a significant non-zero angle of attack be an advantage during 1st stage burn?

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?

12 votes
1 answer
788 views

Why do the shapes of these two exhaust plumes from an Atlas V 411 look different?

24 votes
3 answers
2k views

How are cryogenic rocket propellants delivered to the launch pad?

8 votes
2 answers
293 views

How do you mine water on Mars?

6 votes
1 answer
121 views

Depth to diameter ratio of impact craters

0 votes
0 answers
40 views

Pre burner design for cryogenic propellants [closed]

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?

2 votes
0 answers
36 views

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

5 votes
1 answer
118 views

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

6 votes
1 answer
119 views

Were there backup routes planned for the Apollo LRV?

11 votes
1 answer
448 views

What went wrong with Apollo 15 astronaut Al Worden's seat when he was all alone, circularizing?

2 votes
0 answers
86 views

How do different stages attach to each other?

8 votes
0 answers
97 views

Dimorphos natural orbit variability vs DART impact

0 votes
0 answers
39 views

A hybrid micropropulsion system for CubeSats

0 votes
1 answer
36 views

How to convert TLE data into state vectors in ITRF?


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