As of May 31, 2023, we have updated our Code of Conduct.
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geoffc
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23 votes
Accepted

Why did the Russians never land on the Moon?

23 votes

What made NASA shut down the Shuttle program?

22 votes
Accepted

Why is the first stage from the Falcon 9 SES-12 mission not recovered?

22 votes

Why doesn't the ISS start to spin if people walk inside?

22 votes
Accepted

Air in International Space Station

22 votes

What would one learn by borescoping a rocket engine after an aborted launch?

22 votes
Accepted

Why aren't there any space tugs in use?

21 votes
Accepted

Can the Falcon Heavy handle deep space missions?

21 votes

Are SpaceX Falcon rocket boosters significantly cheaper to operate than traditional expendable boosters?

21 votes
Accepted

Why does the Falcon 9 use RP-1/LOx and not LH2/LOx?

21 votes

Were the Apollo lunar activities observed from Earth?

21 votes
Accepted

Will a Dragon v2 ever bring 7 astronauts to the ISS?

21 votes

Why are the very reliable rockets Atlas V and Ariane V not rated for human flight?

21 votes
Accepted

How do astronauts and cosmonauts sleep on a Soyuz?

20 votes
Accepted

How many spacecraft can dock at the ISS at once?

20 votes
Accepted

Have space station occupants always had a return vehicle ready?

20 votes
Accepted

Why is the F9-029 Amos 6 case more complex than the F9-020 CRS-7 explosion?

19 votes
Accepted

Is SpaceX doing any science with the Roadster and/or spacesuit?

19 votes

How often do other space vehicles visit the international space station?

19 votes

Now that they can land a Falcon 9, what will they do with it?

19 votes

Why aren't all satellite-carrying rockets launched from airplanes?

19 votes
Accepted

Why have so few countries developed satellite launching vehicles of their own?

19 votes

How long can Philae stay "alive"?

18 votes

Why did the Falcon Heavy center core fall off the ASDS OCISLY barge?

18 votes
Accepted

With six spacecraft currently docked at the ISS, how could Santa (or anyone else) deliver presents?

18 votes

Does NASA have spacecraft that are specifically made for orbiting around the Sun?

18 votes
Accepted

Will the ISS need more docking ports?

18 votes

Why don't unmanned launch vehicles include launch escape system for payload?

18 votes

What makes Falcon Heavy with 3 booster 4 times more capable than single booster F9?

17 votes
Accepted

What is the two little black side tanks seen at starship?

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