a thoughtful web.
Good ideas and conversation. No ads, no tracking.   Login or Take a Tour!
comment
rthomas6  ·  2158 days ago  ·  link  ·    ·  parent  ·  post: Why We Haven’t Met Any Aliens

More seriously: I think a big part of the the Fermi Paradox is that our RF signals fall below the noise floor well before they reach another star. Any similar communication from other star systems are not detectable from Earth. So when we look up and don't see any signals from other stars, that's not terribly surprising, because it would take a massive amount of power and/or a conscious effort to send a signal specifically to us.

As for why we haven't seen a Von Neumann probe? Well, we haven't looked very hard, for one. All we know is we haven't seen one on Earth or the moon or 1% of Mars.