Panspermy n. : The doctrine of the widespread distribution of germs, from which under favorable circumstances bacteria, vibrios, etc., may develop.

Panspermy n. : The doctrine that all organisms must come from living parents; biogenesis; -- the opposite of spontaneous generation.

Example:
what contributions has Panspermy made to chemistry?

Taxonomy
Earth, 08-20, Universe, Panspermia Theory, planets, exogenesis, seed, evidence, experiments, Ancient bacteria, environments, organisms, spores, rocks, extraterrestrial life, probability, elements, claims.

Defination from the web:
Panspermia (Greek: πανσπερμία from πᾶς/πᾶν (pas/pan) "all" and σπέρμα (sperma) "seed") is the hypothesis that "seeds" of life exist already all ... Panspermia can be said to be either interstellar (between star systems) or interplanetary (between planets in the same star system) ...