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16 votes
9 answers
2k views

Would this telescope be capable to detect Middle Ages Civilization?

Imagine the aliens of Prettyfaraway had developed deployed the PrettyHuge Space Telescope. This pretty impressive array of gravitational-lensing space faring telescopes was capable of resolving Earth ...
Duncan Drake's user avatar
  • 3,989
5 votes
2 answers
296 views

Plausibility of a cosmic flashbulb

Pendorain, admiral of the illustrious Tenth Fleet, had gathered its fleet near the Xzlicyan Pulsar to nurse its wounds. Battle against the hated Andecklin was not going well. The fleet was using the ...
JBH's user avatar
  • 127k
5 votes
4 answers
252 views

Visibility of explosions from space

I'm trying to figure out whether spacecraft could see explosions occurring on the surface of a planet, or under what conditions they could. To be specific: Given a spacecraft equipped with a ...
rwallace's user avatar
  • 4,906
17 votes
6 answers
2k views

Could a large radio telescope survive interstellar spaceflight?

I recently came across Could pulsars really act as "lighthouses" to help in interstellar travel?, asked a week ago. The author was trying to figure out if pulsars could be useful for ...
HDE 226868's user avatar
  • 102k