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SE - stop firing the good guys's user avatar
SE - stop firing the good guys's user avatar
SE - stop firing the good guys's user avatar
SE - stop firing the good guys
  • Member for 9 years, 2 months
  • Last seen this week
105 votes
Accepted

What is the closest distance a human being has come to Mars ever since the beginning of the space age?

80 votes

Are there any “Third Order” acronyms used in space exploration?

71 votes
Accepted

Could we wait for Mars to come to us?

59 votes
Accepted

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

57 votes
Accepted

Does it require less energy to reach the Sun from Pluto's orbit than from Earth's orbit?

52 votes

Can a moon orbit its planet faster than its planet rotates?

48 votes
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Is there a mockup of the ISS on the ground?

43 votes

What crimes have been committed or attempted in space?

42 votes
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Why aren't there any active space debris removal systems implemented currently?

40 votes
Accepted

Can Kerbal Space Program act as a suitable simulator with the right mods?

35 votes
Accepted

Can you really use Arduino for a small spacecraft?

35 votes

How do space probes find their way and how much fuel do they use to travel?

33 votes
Accepted

What causes a satellite's orbit to decay?

33 votes

What changes to Voyager could have been made?

32 votes
Accepted

Land a cubesat on the moon with ion engine

32 votes

How much bigger could Earth be, before rockets wouldn't work?

31 votes
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Golfball Dimples on spaceships (and planes)?

29 votes
Accepted

What is the name of the area on Earth which can be observed from a satellite?

28 votes
Accepted

How are the Mars Rovers maintained?

27 votes
Accepted

How could a hot lander enter Titan's atmosphere without setting its hydrocarbons ablaze?

25 votes

Why does a spacecraft have angular velocity relative to Earth?

25 votes

Did Feynman cite a fallacy about only circles having the same width in all directions as a reason for the Challenger disaster?

25 votes

Can a satellite orbit the ISS?

25 votes

Are there any studies about "ping pong" cyclers between gas giants?

23 votes
Accepted

How to account for burned fuel mass when calculating spacecraft acceleration?

22 votes
Accepted

What happened to Mariner 2 after it flew by Venus?

22 votes

Rock arches on the moon?

22 votes
Accepted

Google maps for Space exploration

21 votes
Accepted

Why does the point of burn on an orbit stay at a constant altitude?

21 votes

What are the biggest challenges for high altitude rail-gun launch systems?

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