14. Directed Panspermia
The Directed Panspermia hypothesis suggests that life on Earth was intentionally seeded by advanced extraterrestrial civilizations, possibly as a scientific experiment. (en.wikipedia.org) Proposed by Francis Crick and Leslie Orgel in 1973, this theory posits that intelligent beings deliberately transported microorganisms to Earth, aiming to initiate or accelerate the development of life. (ui.adsabs.harvard.edu) While highly speculative and lacking direct evidence, Directed Panspermia raises intriguing questions about the potential for interstellar life dissemination. (scientificamerican.com)