0 the theory that very small organisms or chemicals that begin life can be found everywhere in the universe and that they made life on earth begin: --
From panspermia to bioastronomy, the evolution of the hypothesis of universal life.
This idea (panspermia) is believed to be possible via the mechanism of impact events.
Panspermia theories have been revived of late as a result of the acceptance that meteoritic cross-contamination could occur between terrestrial planets.
On the other hand, the plausibility of panspermia can be tested by examining the ability of contemporary terrestrial life to withstand space travel.
A high proportion arriving by horizontal transfer is consistent with strong panspermia.
The synthesis of this disparate information as it relates to panspermia is the focus of this article.
This is the pre-history of panspermia before modern times: the history of it as it occurs in pre-scientific cosmologies, philosophies, and religions.
Unfortunately, directed panspermia, like all theories concerning the origin of life, is hard to test.
