Fred Hoyle
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Sir Fred Hoyle was an English astronomer. With Margaret and Geoffrey Burbidge and William Alfred Fowler, he formulated the theory of stellar nucleosynthesis in the influential B2FH paper.
Hoyle in 1967
Blue plaque at Bingley Grammar School commemorating Hoyle
Hoyle in 1988
Statue of Hoyle at the Institute of Astronomy, Cambridge
Panspermia
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Panspermia is the hypothesis that life exists throughout the universe, distributed by cosmic dust, meteoroids, asteroids, comets, and planetoids, as well as by spacecraft carrying unintended contamina
Fred Hoyle
…theory (a term he jokingly coined on BBC Radio, though he later denied doing so in derision) in favour of a "steady-state model", and his promotion of panspermia as the origin of life on Earth. He spent most of his working life at St John's College, Cambridge, and served as the founding director of the Institute…
Some microbes appear able to survive the planetary protection procedures applied to spacecraft in cleanrooms, intended to prevent accidental planetary contamination.