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24 votes
3 answers
5k views

Does anybody work on a "spacecraft linux"?

Rick 0xfff
  • 835
211 votes
6 answers
23k views

Can I borrow a lunar rover?

Spammer
  • 1
0 votes
0 answers
17 views

Why did the May 2016 Falcon 9 launch have a radar glitch?

Russell Borogove
  • 164k
4 votes
1 answer
2k views

What "green" propellant powers Curie, the engine on RocketLab's payload kickstage?

Starship is go for launch
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21 votes
3 answers
4k views

Why didn't NASA simulate the conditions leading to the 1202 alarm during Apollo 11?

MadSci
  • 11
115 votes
4 answers
19k views

What is the purpose of having a countdown during a rocket launch?

Spammer
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4 votes
1 answer
53 views

What was the most inconsequential failure on an STS mission recorded in mission reports?

Organic Marble
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9 votes
2 answers
2k views

Why did the Firefly Alpha launch in September 2021 fail?

Spammer
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3 votes
1 answer
97 views

Are the Delta IV Heavy’s attachments for SRBs removable?

Erin Anne
  • 6,716
-1 votes
0 answers
53 views

How long would it take before we use up all the ice in the asteroid belt?

The Rocket fan
  • 3,757
0 votes
0 answers
39 views

When sending a ship to mars what is the optimal travel path [duplicate]

Henry
  • 9
4 votes
0 answers
33 views

What are exactly each of the coefficients in Modified Difference Arrays?

Rafa
  • 1,616
12 votes
4 answers
3k views

Have any bits of a space mission ever collided with a planet or large moon (not Earth) that was not a target of the mission?

CommunityBot
  • 1
28 votes
3 answers
7k views

Did the FAA license the Ingenuity helicopter to fly on Mars?

CommunityBot
  • 1
29 votes
3 answers
7k views

Why did the Soviet Union decide to use 30 small engines instead of a few large ones on the N1?

The Rocket fan
  • 3,757
3 votes
0 answers
115 views

Why did the June 2016 SpaceX launch run out of propellant?

Starship is go for launch
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3 votes
1 answer
305 views

Which STS mission had the most accidents or failures?

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9 votes
4 answers
9k views

Are magnetic boots in space practical?

Elica
  • 11
17 votes
2 answers
441 views

Has NASA ever included a ground controller or astronaut becoming insane/irrational/uncooperative in a training simulation?

GandalfDDI
  • 853
4 votes
0 answers
142 views

Why does the ICPS carry extra hydrogen?

Starship is go for launch
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0 votes
0 answers
108 views

Negative elevation angle

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39 votes
5 answers
10k views

What exactly makes a bolt "aerospace grade"?

CommunityBot
  • 1
3 votes
2 answers
2k views

Could Perseverance survive if Ingenuity failed?

CommunityBot
  • 1
-1 votes
1 answer
143 views

Why didn't Electron's first stage go "There and Back Again"?

Jörg W Mittag
  • 16.8k
19 votes
5 answers
3k views

Feasibility of colonising Ceres?

user50853
  • 1
7 votes
3 answers
518 views

DIY Lunar regolith simulant

caInstrument
  • 509
18 votes
2 answers
2k views

Why is there a lid on the Hubble Space Telescope?

caInstrument
  • 509
5 votes
3 answers
810 views

How can the elements involved in loading a LOX tank be involved in an explosion?

caInstrument
  • 509
11 votes
1 answer
3k views

How close was the ISS to running out of supplies after the failure of CRS-7?

caInstrument
  • 509
0 votes
5 answers
366 views

Is the launch of a rocket slow because the change in velocity (delta_v) should be as small as possible because of energetic reasons?

Starship is go for launch
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8 votes
1 answer
162 views

What is the cabling on the exterior of the SLS solid rocket boosters that wasn't on the shuttle solid rocket boosters?

GandalfDDI
  • 853
1 vote
0 answers
55 views

Need advice to set up reaction wheel cluster in lab

Zhanfeng Lim
  • 169
1 vote
1 answer
101 views

How do "halo orbits" save on propellent (delta-v)?

Michael Stachowsky
  • 6,170
8 votes
2 answers
381 views

Did any astronauts smoke within a spacecraft while in space?

Starship is go for launch
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9 votes
1 answer
235 views

What is the speed of crew Dragon upon splashdown?

Starship is go for launch
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1 vote
0 answers
335 views

What are some drawbacks of Automated Flight Termination Systems (AFTS) sometimes called Automated Flight Safety Systems (AFSS)? [closed]

Starship is go for launch
  • 3,377
3 votes
1 answer
137 views

When chopsticks catch the booster by the grid fins, what is the maximum vertical speed?

Starship is go for launch
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10 votes
2 answers
812 views

Would a dimpled heat shield reduce heat transfer during reentry?

Brand
  • 1
3 votes
1 answer
229 views

What outdated components of Columbia made it heavier than the other Space Shuttles?

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  • 3,377
1 vote
0 answers
60 views

Why ECEF does not coincide with ECI on January 1, 2000 at 12.00? [duplicate]

ismailhy58
  • 21
9 votes
1 answer
1k views

What computer programs does ITAR say I can or can not write, or share, or use in the US?

Alina Marks
  • 1
2 votes
0 answers
29 views

Approach to Interplanetary Transfers in GMAT

FTT
  • 129
0 votes
1 answer
93 views

Where and how many RCS thrusters are installed on Starship?

Starship is go for launch
  • 3,377
-2 votes
3 answers
258 views

Can Solid Rockets (Aluminum-Ice) have an advantage when designing light space-tug for LEO?

user438383
  • 105
22 votes
3 answers
7k views

How long can a 2 person crew survive on ISS totally cut from Earth?

Erin Anne
  • 6,716
6 votes
1 answer
6k views

How long can the SpaceX Starlink satellites survive before they deorbit?

Starship is go for launch
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4 votes
7 answers
1k views

How can the CYGNSS spacecrafts (actually) measure ocean roughness?

uhoh
  • 149k
4 votes
1 answer
512 views

Why did they not use the Flight Termination system on CRS16 booster?

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