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Questions of the science and space exploration related to Earth.

12 votes

How to respond to the case against space?

There are many things we should forgo until we have "fixed the earth". Ask the professor how he's doing on giving up all that, and by the way, what exactly has he done to fix the earth? … But this "fixing the earth first" assertion is far broader, and is clearly silly once those broad implications are exposed. …
Mark Adler's user avatar
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20 votes
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Can a satellite orbit Earth so that it always has the Moon in line of sight?

If you're going to point antennas at the Moon from the near vicinity of Earth, you can have many more antennas and much larger antennas on the surface of the Earth than what you would be able to put into … Earth orbit for an equal amount of money. …
Mark Adler's user avatar
  • 58.4k