## Buffon, Georges Louis Leclerc, Comte de (1707–1788)Histoire
naturelle (1749–1804). The opening volume of this work contains Buffon's cometary collision hypothesis of the origin of the Sun's planetary system. In the 1775 Supplément, he argues that terrestrial-type life occurs
on every world where the temperature is the same as on present-day Earth.
This leads him to compute the times and durations for which the various
planets and moons of the solar system have been, are, or will be habitable,
based on the assumption that most of their heat is internal rather than
derived from the Sun. Mars according to his
calculations is already dead, Earth has 93,291 life-sustaining years left,
while Jupiter has not yet cooled to the
point at which life can begin. He is also responsible for investigating the mathematical problem known as Buffon's needle. ## Related categories• BIOLOGISTS• MATHEMATICIANS | ||||||

Home • About • Copyright © The Worlds of David Darling • Encyclopedia of Alternative Energy • Contact |