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Top Questions
48 votes

Was anyone murdered, disappeared, or died suspiciously to cover up the Deepwater Horizon disaster?

history asked Feb 15 '19 at 3:52
skeptics.stackexchange.com

34 votes

Was the Space Shuttle ever actually intended for the military to steal satellites without the owner's consent?

space-shuttle military asked Mar 2 '20 at 1:45
space.stackexchange.com

26 votes

Curiosity and Perseverance landing - with so much dust blown everywhere, what's the point of the skycrane?

rovers curiosity perseverance entry-descent-landing asked Feb 28 at 10:04
space.stackexchange.com

23 votes

What actually is RP-1, and how is it different from any other hydrocarbon liquid fuel?

rockets engines fuel liquid-fuel asked Apr 8 '20 at 6:34
space.stackexchange.com

22 votes

How dangerous are RCS thrusters?

rockets safety rcs retrorockets asked Feb 28 '20 at 7:53
space.stackexchange.com

13 votes

Can I make a completely ITAR-free spaceship?

law united-states itar asked May 1 '20 at 1:44
space.stackexchange.com

13 votes

Why do many RTGs have finned heatsinks, when this is considered bad for radiation heat transfer?

thermal thermal-control rtg asked May 23 '20 at 10:17
space.stackexchange.com

12 votes

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

nasa simulation training asked Aug 3 '20 at 3:17
space.stackexchange.com

10 votes

Why so many laptops on the ISS?

iss crewed-spaceflight computer asked Apr 20 '20 at 19:48
space.stackexchange.com

10 votes

How can I make py.test tests accept interactive input?

python py.test asked Dec 17 '16 at 0:34
stackoverflow.com

1 2 3

Top Answers
52
Why is the supply of RTG's running short?
space.stackexchange.com

36
“Shields at 10% one more hit and…” What?
worldbuilding.stackexchange.com

31
What actually is RP-1, and how is it different from any other hydrocarbon liquid fuel?
space.stackexchange.com

26
How many ion thrusters would be needed to accelerate a 1000 tonne craft at 9.8m/s²?
space.stackexchange.com

25
Using of the rocket propellant for engine cooling
space.stackexchange.com

22
Why can't cryogenic oxygen and cryogenic kerosene be “stored” together?
space.stackexchange.com

21
Why use a Mars orbital Earth return vehicle for sample return?
space.stackexchange.com

18
Why do you need a heat shield on Mars entry if the atmosphere is so thin?
space.stackexchange.com

17
Why do many comets & asteroids keep moving through the solar system, but space ships need fuel to do so?
space.stackexchange.com

14
Is the concept of the Epstein Drive based on actual theorized scientific research which is considered plausable?
space.stackexchange.com

13
Why exactly does Curiosity's RTG make more electricity on cold days?
space.stackexchange.com

12
Using nuclear detonations for propulsion
space.stackexchange.com

10
Do converging-diverging engine nozzles need to be bell-shaped?
space.stackexchange.com

8
Heat shield on Venus
space.stackexchange.com

8
Could the Dream Chaser or Space Shuttle fly/have flown to the Moon with boosters on the orbiter's side?
space.stackexchange.com

7
Can a spacecraft be propelled by two electromagnets of different size?
space.stackexchange.com

6
Justifying the use of directed energy weapons
worldbuilding.stackexchange.com

6
Capsule heat shielding made of Aerogel?
space.stackexchange.com

6
Would an incandescent light bulb be more efficient than a laser for photon propulsion?
space.stackexchange.com

6
What was the influence of the military in the decision to use kerosene as fuel for LOX?
space.stackexchange.com

6
The skycrane of Perseverance releases the rover and flies away in a dusty environment but there is no sign the engines work. How is it possible?
space.stackexchange.com

5
Why can't we use charged fine metal dust instead of plasma for ion thruster?
space.stackexchange.com

5
Would a small electron microscope in a cubesat work well in space at 400 km?
space.stackexchange.com

5
What are the cutting edge materials & strategies which could be used for radiation shielding on long-duration missions?
space.stackexchange.com

5
Can Amateur Rocketeers use Liquid Nitrogen Dioxide as oxidizer?
space.stackexchange.com

5
Petrol as rocket fuel
space.stackexchange.com

5
Could pressurized ionized oxygen be used as a fuel source for an ion thruster?
space.stackexchange.com

5
Why can I not use stoichiometry to calculate the O/F ratio of my rocket?
space.stackexchange.com