posted on May, 1 2013 @ 09:28 PM
Panspermia seems very unlikely in my opinion. One example was brought up in this thread. A comet collecting chemicals through space gets zip-zapped
by high levels of radiation....and wah lah we have the building blocks of life. Concluding from that; These building blocks get blasted on a certain
planet (Earth) when the comet hit's that planet (Earth)? These building blocks find just the right conditions... and wah lah you have life on
This theory doesn't seem to be Panspermia at all, because the only difference between Panspermia and Abiogenesis is where did the emergence of life
happen. Was it on Earth or not on Earth? The emergence of life in this scenario happens on Earth.
The real version of Panspermia is life travels to Earth in some form or fashion, fully formed.
This, in my opinion, seems much more unlikely. Life would have to travel very long distances, survive extreme conditions, survive some sort of
collision, and be tailor made for our planet.
There is another version. This planet was intentionally seeded with life. In that case the whole process is controlled by some form of intelligence.