Heliovdrake: In before the QA-Luddites
Stone Meadow: MindStalker: FTA: NASA is developing an orbiting factory that will use as part of its ongoing search for extra-terrestrial life.The question of how far away one could see an earth-sized object got me to searching the 'tubes. Turns out to resolve a small planet at 20 light years you'd need a telescope 13 km in diameter, or 65 km if you want to see major features like mountains, cities, lakes, etc. at that distance.Obviously we aren't going to build telescopes that large, so what if we put a 1 km wide scope at L4, say, and another at L5, and operated them as a very long base interferometer? Would that work? Or is it more a matter of light gathering than resolution?
MindStalker: FTA: NASA is developing an orbiting factory that will use as part of its ongoing search for extra-terrestrial life.
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