Space Exploration
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geoffc
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672 Answers

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94 votes
Accepted

Is Starman in the Tesla Roadster a real human?

91 votes

What did the Soviet Union and Russia bring to the ISS?

85 votes
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Why is SpaceX considering Methane as fuel for their next engine, the Raptor?

75 votes
Accepted

Why does the ISS have to be destroyed?

67 votes

Why did the Chinese send flies and plants to the far side of the moon?

63 votes
Accepted

Why did the Tesla Roadster spend time in the Van Allen belt?

50 votes
Accepted

What is SpaceX doing differently with Starship to avoid it exploding like the N1?

49 votes
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Why are rocket engines operating above 100% often considered nominal?

49 votes
Accepted

Why does the interior of the ISS appear so disorganized?

49 votes

Difference between BlueOrigin and SpaceX rocket landings?

47 votes

Why do SpaceX Starships look so "homemade"?

45 votes

Is Crew Dragon flawed? Is it just an improvisation with no future?

44 votes
Accepted

Why does the Falcon 9 have 9 engines?

43 votes
Accepted

Why are only 2 out of the 3 boosters on Falcon Heavy reused?

43 votes
Accepted

Why does the ISS have so much pressurized but uninhabitable space?

42 votes
Accepted

How are the SpaceX Falcon 9 Mod 3 and Mod 4 grid fins different?

40 votes
Accepted

What is the primary reason for SpaceX motion to have astronauts board Dragon before fueling up the rocket?

39 votes
Accepted

Why won't SpaceX launch a rocket for a month?

38 votes

Why did it take so long for methane to be used as a rocket propellant?

37 votes
Accepted

What is a thrust puck on Starship?

35 votes
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So with Soyuz being retired, what gets people up to the ISS and back down now?

35 votes
Accepted

Why is it preferable for SpaceX to land their booster vertically rather than fly it down with wings?

34 votes
Accepted

Why does the CRS-8 Falcon 9 rocket appear to be swaying before launch?

34 votes
Accepted

Why decommission the ISS?

34 votes
Accepted

What work needs to be done before reusing Falcon 9?

33 votes
Accepted

Why is NASA building its own rocket for the moon mission when it could use SpaceX's?

33 votes
Accepted

What holds SpaceX’s rocket in place in this launch?

33 votes
Accepted

Why is the Delta IV Heavy taller than the Delta IV Medium?

33 votes

Why is the SpaceX crew-1 mission more important than the previous one (demo-1)?

33 votes

Why doesn't the US use European rocket engines?

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