uhoh's user avatar
uhoh's user avatar
uhoh's user avatar
uhoh
  • Member for 8 years, 4 months
  • Last seen this week
  • Taipei, Earth
97 votes
Accepted

Are there any satellites in geosynchronous but not geostationary orbits?

68 votes
Accepted

Why vent $CO_2$ and $H_2$ waste products to space on ISS?

66 votes

Is pinging the Moon with a laser as shown on "The Big Bang Theory" possible?

59 votes

Why didn't the Space Shuttle bounce back into space as many times as possible so as to lose a lot of kinetic energy up there?

58 votes

The dreaded apocalyptic asteroid approaches Earth but lands safely on the Moon at zero relative velocity

56 votes
Accepted

Why is JWST parked in sunlight, rather than using a nuclear battery?

54 votes
Accepted

Could a space colony 1g from the sun work?

49 votes

Why does the sky of Mars appear blue in this video of pictures sent back by the Chinese rover?

44 votes

Is the SpaceX Falcon Heavy payload (a Tesla car) space junk?

43 votes

Why did multiple nations decide to launch Mars projects at exactly the same time?

41 votes

Is Nibiru real or totally science fiction?

34 votes

What impact will the deorbiting of thousands of satellites have on the atmosphere?

34 votes

What would it take to get a message to another star?

33 votes
Accepted

How is the altitude of a satellite defined, given that the Earth is not spherical?

30 votes
Accepted

Are images of exoplanets' surfaces technically possible?

30 votes
Accepted

How far have astronauts been in space?

30 votes

Which LEO satellite lost over 30 km of altitude in the geomagnetic storm of 13-14 March 1989?

29 votes
Accepted

How can electronics on board JWST survive the low operating temperature while it's difficult to survive lunar nights?

28 votes

Is it ethical for Chang'e-4 to bring an entire ecosystem to the moon?

28 votes

Could a spy satellite in orbit be recommissioned to do astronomy?

28 votes
Accepted

Why are RTGs different colors?

27 votes
Accepted

Why do SpaceX expect the Falcon 9 rocket to explode during the in flight abort test?

26 votes
Accepted

Is Quantum Entanglement technology possible for interplanetary communication in future to achieve low real-time latency?

26 votes

Question on giant satellite orbit

26 votes

Why doesn't the ISS orient itself to the Earth's magnetic field like a compass needle?

26 votes

What artificial satellite has the farthest orbit around the Earth?

26 votes
Accepted

slowest crash on the Moon?

26 votes

instead of pressurizing an entire spacesuit with oxygen could oxygen just pressurize the head and the rest of the body be pressurized with water?

25 votes

What is the "mass" of a Lagrange point?

25 votes
Accepted

Potential high temperature power sources for a Venus lander

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