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geoffc
  • Member for 11 years
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23 votes

Why does Virgin Galactic's SpaceShipTwo need a carrier airplane?

23 votes
Accepted

Why will Superheavy/Starship have a landing pad so close to the launch pad?

23 votes

Falcon 9 launch process - perception of launch speed

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?

22 votes
Accepted

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

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?

21 votes
Accepted

How do astronauts and cosmonauts sleep on a Soyuz?

21 votes
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Can the Falcon Heavy handle deep space missions?

21 votes

Were the Apollo lunar activities observed from Earth?

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

21 votes

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

21 votes

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

21 votes

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

21 votes

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

20 votes
Accepted

Have space station occupants always had a return vehicle ready?

20 votes
Accepted

How many spacecraft can dock at the ISS at once?

20 votes

How long can Philae stay "alive"?

20 votes
Accepted

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

20 votes
Accepted

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

19 votes

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

19 votes
Accepted

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

19 votes
Accepted

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

19 votes
Accepted

Will the ISS need more docking ports?

19 votes

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

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?

18 votes

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

17 votes
Accepted

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

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