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36 Answers

Votes Activity Newest
36
How many petaflops does it take to land on the moon? What does Artemis need with an Aitken?
Aug 26 '19 at 16:41
34
Is it possible for a moon to have a higher surface gravity than the planet it is attached to?
Dec 2 '19 at 19:20
23
Can our civilization colonize solar system while reliant on fossil fuels?
Jun 19 at 11:04
21
Double redundancy for the Saturn V LVDC computer memory, how were disagreements resolved?
Aug 11 '19 at 10:59
14
How did skeptics of rocketry think rockets work?
Aug 9 '19 at 14:52
8
Is an Earth synchronous (?) polar orbit possible?
Jan 10 at 12:44
8
What kind of camera was used to produce this Apollo-era footage of the Earth?
Jul 29 '19 at 10:37
7
SpaceX Body Flaps - Why so Much Power Required
Jun 21 at 11:46
7
What is the atmospheric composition of Venus at the 34 mile (50 km) altitude of the proposed HAVOC program?
Jan 13 at 14:07
7
Could the James Webb Space Telescope detect chlorophyll on a exoplanet?
Jan 8 at 10:01
6
Could a helium balloon on Mars and on Triton float at air pressures lower than it could on Earth due to the bodies' low gravities?
Jun 18 at 13:56
6
Do we know what is the approximate size of this object on Pluto's surface?
Apr 14 at 11:07
5
Acceleration and reaction mass?
Jan 8 at 11:07
4
Can an electrostatic shield provide protection from the Van Allen belt?
yesterday
4
Mars 2020: What are the advantages of doing two missions to return samples?
Jun 30 at 19:12
4
Visualising orbits from different viewpoints in Python
May 27 at 13:44
4
If solar radiation can heat up gas particles in the thermosphere, why will it not heat up a spacecraft?
Jan 5 at 18:13
3
How do phonesats stay cool?
8 hours ago
3
Were/Are the Space Shuttle or the Falcon 9 Dragon capable of achieving an elliptical orbit on whose apogee you'd see the entire Earth?
Jun 28 at 19:32
3
Prior to putting spacecraft on a trajectory going a significant fraction of the speed of light, would some things need to be tested on Earth?
Jun 7 at 11:15
3
Is a polar geosynchronous orbit described by Viviani's curve?
Mar 26 at 16:22
3
Why do nuclear rockets (e.g. NERVA) have such poor Thrust-to-Weight ratios?
Jan 4 at 13:16
3
Stanley Kubrick used a NASA-inspired lens to film by candlelight in Barry Lyndon, but what did NASA use it for?
Aug 7 '19 at 9:38
2
Why are all space initiatives designed to get to space overnight when in Nature all extreme feats are achieved in a gradual process
Jun 29 at 13:25
2
Can you ride a bicycle on Deimos?
Jun 22 at 12:04
2
Was not saving the Apollo 13 astronauts ever considered as an option?
Mar 23 at 15:29
2
How might SpinLaunch actually spin something fast enough to launch it into orbit?
Jan 22 at 15:45
1
History of investigation of lunar and Martian surface gravity
Jun 21 at 13:27
1
What are the needle pins that go through the pneumatic pushers of the Falcon 9 fairing?
Jun 12 at 15:38
1
What does it take for a craft to perform a flight simulating weightlessness without having to fly a steep parabola/ellipse?
Apr 13 at 12:54
1
2