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The Busy Center of the Lagoon Nebula

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Aliens haven't contacted us. Scientists found a compelling reason why. (mashable.com)

submitted 4 months ago by [email protected] to c/[email protected]

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tectonic planet are rare

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[–] [email protected] 5 points 4 months ago (1 children)

Maybe it's impossible to travel faster than the speed of light? So it may not be a thing where aliens can just swing by our solar system to snap a few photos before heading off to the next one.

[–] [email protected] 2 points 4 months ago

I'm sure that's the case. You can travel to other stars without ftl, it's just a lot slower and probably one way. It's really pretty limiting for society, for instance, without ftl an interstellar "civilization" is basically out of the question, you can't govern another star system without at the very least faster communication.