Panspermia is the idea that life is carried to planets throughout the universe like “seeds” through various vectors such as meteors, comets or other space debris, that may then grow and propagate once favorable conditions have been met. https://en.wikipedia.org/wiki/Panspermia Thanks to these free roaming nomads, the “seeds” they carry may transfer to extrasolar planetary systems or even to other galaxies.
In the Beginning…
Dreams of Blue Glass 