Not quite. Panspermia says that life exists on other planets and then somehow is distributed through space to other planets. The OP was just saying that the "bu

Not quite. Panspermia says that life exists on other planets and then somehow is distributed through space to other planets. The OP was just saying that the "building blocks" exist throughout space but life develops on planets. Edit: The wikipedia article breaks it down sufficiently, https://en.wikipedia.org/wiki/Panspermia https://en.wikipedia.org/wiki/Panspermia