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:
“But country folks who live beneath
The shadow and the steeple;
The parson and the parson’s wife,
And mostly married people;”
—Arthur Hugh Clough (1819–1861)
“As life developed, I faced each problem as it came along. As my activities and work broadened and reached out, I never tried to shirk. I tried never to evade an issue. When I found I had something to do—I just did it.”
—Eleanor Roosevelt (1884–1962)