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Most of our light pollution is caused by "carelessness". We put on way more lights than we reasonably need, and we put on the wrong kinds that are more confusin
by digging 3y ago
Most of our light pollution is caused by "carelessness". We put on way more lights than we reasonably need, and we put on the wrong kinds that are more confusing to wildlife.
Aliens might not do that. Their cities might be fairly dark at night.
- bluGill 3y agoAliens might not even use light or radio based vision. They could be like bats and use echo location. You are also assuming "intelligent life", and that it is sufficiently advanced to have created cities and some form of light bulb. (this could include a lantern). Without that you have to rely on other signs of life.
- wolverine876 3y agoElectromagnetic radiation is pretty universal (ha). We might expect that many advanced life forms have ways to detect it.
- bluGill 3y agoSure, but we also expect vastly more non advanced life
- digging 3y agoI'm not sure you've been following the conversation... I'm not wondering how we can find life, I said looking for city lights at night is a bad way to look for life.