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GdD's user avatar
GdD's user avatar
GdD's user avatar
GdD
  • Member for 10 years, 3 months
  • Last seen this week
78 votes
Accepted

How can astronauts float in space without being affected by the gravitational force of nearby objects?

67 votes
Accepted

Why doesn't SpaceX land boosters in Africa?

64 votes

Why it's news that SOFIA found water when it's already been found?

60 votes
Accepted

Can we power things (like cars or similar rovers) on earth in the same way Perseverance generates power?

53 votes

Could colonizing Moon dangerously affect its gravity?

50 votes
Accepted

Can we write with chalk on blackboard in space?

49 votes
Accepted

Could the Lunar X-Prize have been won by the Tesla Roadster that was the Falcon Heavy test payload?

48 votes

Why wasn't the Mars Climate Orbiter's fatal error caught prior to launch?

48 votes
Accepted

Are heat shields just as necessary on launch as re-entry?

41 votes

Why can't Falcon 9 fairings touch the water?

40 votes

Reusable spacecraft: why still have fairings detach, instead of open/close?

37 votes

Going over the Apollo fuel numbers and I have many questions

33 votes

Could the Columbia crew have survived if the RCS had not been depleted?

31 votes
Accepted

Why was orbital rendezvous considered so controversial?

30 votes

Why haven't telescopes been sent to other planets?

29 votes
Accepted

Why weren't Saturn V and the Soviet N-1 Moon rockets made larger in order to simplify Lunar missions?

29 votes
Accepted

Nuclear Explosion in Space

28 votes

Is there a satellite that tracks other satellites?

27 votes

What crewed space flight landed farthest off-target?

26 votes

Why is dust such a problem in microgravity? Wouldn't proper air circulation and filtration take care of it?

24 votes

What was the Shuttle Carrier Aircraft escape tunnel?

24 votes
Accepted

Is there a "procedural shift" meaning to the statement "we have cleared the tower"

23 votes
Accepted

Can we use interstellar hydrogen as a fuel for interstellar travel?

23 votes
Accepted

How does a spacecraft such as Soyuz detect when it's on collision course with an object?

23 votes

How come there are so few TNOs the Voyager probes and New Horizons can visit?

22 votes

Why do space rockets not start from an angle? Why go straight up?

21 votes

Where will the Pioneer, Voyager and New Horizons spacecraft be after one galactic orbit?

21 votes

Cheap cost of Mangalyaan

20 votes

Why not send Voyager 3 and 4 following up the paths taken by Voyager 1 and 2 to re-transmit signals of later as they fly away from Earth?

20 votes
Accepted

What is wrong with hydrazine as a monopropellant?

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