And why can't they make ship supporting numerous generations on the way over?
And, even if they stayed put, there should still be evidence. Radio, ect. If intelligent life were as common as some people think, we'd know by now.
Because they don't know how to power such an object for that long, can't guarantee a minimum reliability over that long a haul, and can't afford to build it in the first place.
And, even if they stayed put, there should still be evidence. Radio, ect.
We've barely begun to listen. RadioAstronomer can give you some hard numbers on how many star systems we've checked thoroughly for radio transmissions.
If intelligent life were as common as some people think, we'd know by now.
If we'd found it by now, it would mean that the galaxy is bursting at the seams with civilizations.
oh, there's lots of evidence...videos from different sources of the same event, records in sumerian texts, eyewitness accounts, removal of foreign matter, which cannot be identified, from those who claim to be abducted, and so on, and on, for over 5,000 years.
When you have huge ego assets tied up in belief systems, any threat which exists to that belief system, no matter how valid, will be discounted.
I know: ALL those people are making it up, all the videos are fake, and everyone who suffers ridicule by reporting these things do it for the glorious reward of insults and denigration by others.