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Top Questions

2 votes
1 answer
35 views

Could ingenuity survive if Perservance failed?

0 votes
1 answer
76 views

Why aren't clusters of F-15 or SR-71 engines used for a boost stage for rockets? [duplicate]

5 votes
3 answers
525 views

What is "aerospace grade"?

19 votes
4 answers
3k views

What makes aluminum aerospace grade?

1 vote
1 answer
52 views

Historical Moon’s True Anomaly Numbers

10 votes
6 answers
4k views

How could 99942 Apophis, in 2029, be captured and brought into a low Earth orbit?

3 votes
1 answer
116 views

What if Perseverance had experienced a fault after dropping Ingenuity?

0 votes
0 answers
52 views

Repeat ground track with 1 day repetition

12 votes
1 answer
997 views

Why was the Atlas V's SRB kept attached for 1 minute after burnout in the OFT-2 mission?

5 votes
1 answer
131 views

Is there any chance that Opportunity survived, but NASA kept pinging it at the wrong time?

18 votes
5 answers
11k views

Why doesn’t NASA build its rockets using graphene?

0 votes
1 answer
187 views

Why is my C++ code for an orbit propagator wrong?

2 votes
0 answers
48 views

Reaction control system testing

2 votes
1 answer
94 views

How many times has SpaceX reused Falcon 9 first stage until now? [closed]

3 votes
0 answers
89 views

How does US crewed launch abort coverage "jump" the ocean in an instant?

5 votes
2 answers
1k views

Are nozzle plugs taken out before launch or are they ejected upon ignition?

2 votes
1 answer
103 views

How to plot a satellite's orbit around Earth in MATLAB?

1 vote
0 answers
91 views

After one year exploring Jezero's crater floor, (why) hasn't there been any investigation into the presence of trace elements with PIXL?

6 votes
3 answers
115 views

Is crater counting accurate for relative dating between celestial bodies?

0 votes
0 answers
24 views

Between two spacecraft, differential phase measurements are used to achieve high relative bearing accuracy. How is this done?

0 votes
1 answer
55 views

How to calculate the max mass and speed of an asteroid capturable by gravity assist?

1 vote
0 answers
20 views

NASA GMAT Hardware in the Loop testing

29 votes
6 answers
9k views

Has any space agency saved Earth from a major calamity any time?

9 votes
4 answers
5k views

Can a military satellite be used to spy on any place on Earth undetected? [closed]

5 votes
1 answer
76 views

Low-thrust maneuver validation in GMAT

7 votes
2 answers
308 views

Helium balloon as a rocket

7 votes
3 answers
251 views

Can something like SpinLaunch actually work?

0 votes
0 answers
42 views

How do I convert from one local NED frame to another?

11 votes
1 answer
1k views

Does the Merlin vacuum engine on SpaceX's Falcon 9 gimbal?

0 votes
0 answers
37 views

Alodine on Spacecraft External Surfaces?

5 votes
1 answer
332 views

How to find the hyperbolic angle given the mean anomaly?

3 votes
1 answer
423 views

What's this inside the RD-0120?

5 votes
2 answers
286 views

Where can I find an up-to-date report on the Hubble Telescope's orbital history and current altitude?

0 votes
2 answers
149 views

Can a human base jump to earth from a satellite? [duplicate]

6 votes
1 answer
313 views

How far is the solar system's center of mass from the sun? [duplicate]

7 votes
1 answer
215 views

Is the Beagle fixable?

6 votes
1 answer
162 views

Can we use magnets to land a spaceship (Starship)?

8 votes
1 answer
741 views

What is the purpose of the shrouds surrounding these rocket engines?

14 votes
2 answers
2k views

Could a Mars rover go to Phobos or Deimos instead?

3 votes
0 answers
155 views

Why "quiet cruise" of a spacecraft would cost NASA 30 mln $ a year?

4 votes
1 answer
157 views

Do monopropellants have a characteristic length?

0 votes
1 answer
200 views

Can we launch from the moon?

5 votes
2 answers
1k views

Resources on Coking?

2 votes
0 answers
129 views

Is electric propulsion feasible for human spaceflight?

4 votes
0 answers
45 views

Is there a significant reason why pintle injectors are only used in single configuration?

2 votes
1 answer
71 views

How does one calculate the look angle for non-geo satellites (i.e. LEO, HEO, etc.)

8 votes
5 answers
2k views

Do two objects with intersecting orbits have to collide given enough time?


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