Xenobiotic Xenocide

From the Greek word "Xeno" = strange, the observation/speculation of the biology of very uncommon or unverified creatures. This term has usage in the research categories of cryptozoology and otherworldly aliens.

The study of extraterrestrial organisms. Though none are known to exist at this time, they are a more plausible explanation of the origin of life on earth than that commonly offered by Creationists.