Given the incredible depth of code available in DNA, it's entirely possible that life is so ancient that it originated in a distant universe that has not existed for trillions of eons.
The competing doctrine is that of "little Earth" ~ where, it's believed that life arose as a consequence of natural processes we can all understand, and that it "evolved" in the last half billion years (after 3.5 billion years of no change whatsoever) into a plethora of critters.
Panspermia says nothing whatsoever about evolution, per se. "Little Earth" doctrines require evolution.
So far, neither view has been demonstrated to be true or false.
Actually Crick suggested that "we" evolved twice, once from random chance into intelligent beings in another universe "far far away", who then seeded the earth to start life evolving again. Crick would deny God twice, apparently once not being enough, in the absence of science to explain the contradiction between evolution and that pesky DNA replication process.
Apparently such theories as "panspermia", when presented by atheists, are considered scientifically more plausible than a God.