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 shadow of a mighty Negro past flits through the tale of Ethiopia the shadowy and of the Egypt the Sphinx. Throughout history, the powers of single blacks flash here and there like falling stars, and die sometimes before the world has rightly gauged their brightness.”
—W.E.B. (William Edward Burghardt)
“He did not live, he observed life from a window, and too often was inclined to content himself with no more than what his friends told him they saw when they looked out of a window.... In the end the point of Henry James is neither his artistry nor his seriousness, but his personality, and this was curious and charming and a trifle absurd.”
—W. Somerset Maugham (1874–1965)