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There's an argument that aliens are more likely near us than far away: if life on our planet got started via panspermia, then closer planets are more likely to
by pjscott 4y ago
There's an argument that aliens are more likely near us than far away: if life on our planet got started via panspermia, then closer planets are more likely to have been seeded with our distant ancestors as well.
- simonh 4y agoI love the idea of panspermia, it’s fascinating, but I think the evidence is against it. If life evolved elsewhere we would expect it to have undergone significant evolutionary development before arriving on Earth, but that does not seem to be the case. The earliest life forms on Earth were incredibly primitive in terms of their molecular construction and biochemical pathways.