The Panspermia hypothesis

[tjlemke]

Panspermia (from Ancient Greek πᾶν (pan), meaning 'all', and σπέρμα (sperma), meaning 'seed') is the hypothesis that life exists throughout the Universe, distributed by space dust, meteoroids, asteroids, comets, planetoids, and also by spacecraft carrying unintended contamination by microorganisms.

__________________

We sent satellites into space contaminated with water bears and accidentally might have created life on other planets. Think about it...

They have been around from the start and didn't need to adapt that much because at their size and with their durability they can survive cataclysmic events that would wipe out all other life. They are the catalyst of all life on earth and potentially other planets (we might have come from galaxies away to find a sustainable environment). Also remember they can live in space and we don't exactly know the extent of their ability to survive. Seems possible in my book.