Questions tagged [fermi-paradox]

"If extraterrestrial intelligence exists, why have we found no evidence?", first defined as a paradox by Enrique Fermi and colleagues, after estimating based on various facts that an advanced civilization has had time to colonize the entire galaxy many times over.

Filter by
Sorted by
Tagged with
4
votes
2answers
796 views

Could unexpectedly high levels of interstellar space debris be the Great Filter?

I've heard (though I can't find the source) that sufficiently large interstellar space debris has the potential to destroy spacecraft, and that there is considerable uncertainty about how much of a ...