Shadow life is a theory proposed by Paul Davies, which suggests that life may exist on Earth which has no evolutionary connection with any form of life currently known to science. If shadow life actually exists, this would greatly increase the prior probability of extraterrestrial life developing on other Earth-like planets.
Famous quotes containing the words shadow and/or life:
“The whole shadow of Man is only as big as his hat.”
—Elizabeth Bishop (1911–1979)
“In European thought in general, as contrasted with American, vigor, life and originality have a kind of easy, professional utterance. American—on the other hand, is expressed in an eager amateurish way. A European gives a sense of scope, of survey, of consideration. An American is strained, sensational. One is artistic gold; the other is bullion.”
—Wallace Stevens (1879–1955)