Quote from Teleologist:
I suspect that if scientists succeed in creating life from non-life they will accomplish it through bioengineering and/or nanotechnology. Likewise for seeding other planets with life. If this is a possible future then I see no reason this couldn't have been how life began on earth.
1. Life started spontaneously on earth.
2. Life was put here by alien spacecraft. And the alien life was put on their planet by another alien spacecraft. And that alien life was put on their planet by...
3. Life was started by Invisible Freddie.
4. There had always been life on earth, even before when there was earth...
So your answer is #2.
Who seeded the first alien life?
