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So radio wave emissions are valid proof of life, but not emissions of visible light? Seems a bit arbitrary.
by colonwqbang 3y ago
So radio wave emissions are valid proof of life, but not emissions of visible light? Seems a bit arbitrary.
- digging 3y agoThat's the opposite of what I'm saying. Checking the night side of a planet for visible light isn't useful because a technological civilization won't necessarily create large amounts of light pollution the way we do. If we happen to see nighttime light pollution that would be useful, but planning a mission around looking for it specifically would not make sense.