Re:When Hubble stared at nothing for 100 hours (2015)
by bluGill on Friday July 24, 2020 @02:27PM
(#23942914)
It isn't even clear that the pursuit of colonization we want to pursue is even possible. It takes a lot of energy to do those things and there are limits to how much we can safely use. We are already worried about global warming despite not having a colony to support.
Re:When Hubble stared at nothing for 100 hours (2015)
by YayamiOmate on Friday July 24, 2020 @02:52PM
(#23943189)
Yea, but they would have to blink a significant portion of their galaxy for us to notice.
The top of our capabilities is indirect planet discovery. So alien civilization would need to affect ceartain stars on a scale that a planet does and make it look not natural, like prime number periods or something.
You say that as if we could tell with any certainty, at that scale. There could be interstellar civilizations spanning several of those galaxies and uncountable intelligent civilizations that simply never pursued space travel or the constant accelerated curve of energy consumption and colonization we assume they would, only because we ourselves would.
We wouldn't know, we don't even really know what we're looking for, and the universe is so vast that even if we did, we'd be all but certain to blink and miss it.