Panspermia as a theory has been around for a while, but there’s no real evidence to support it yet. The weaker forms of the theory don’t postulste life as being

Panspermia as a theory has been around for a while, but there’s no real evidence to support it yet. The weaker forms of the theory don’t postulste life as being extraterrestrial, but the complex organic building blocks of life could be. Until a rigorous model of life can be developed, until life can be created in vitro from non-living stuff, or until evidence of life or complex organics can be found beyond Earth it’s hard to prove or disprove. The same can be said of pretty much all theories concerning the origin of life on Earth though. https://en.m.wikipedia.org/wiki/Panspermia https://en.m.wikipedia.org/wiki/Panspermia