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Panspermia (from Ancient Greek πᾶν (pan) 'all' and σπέρμα (sperma) 'seed') is the hypothesis that life exists throughout the Universe, distributed by space dust, [1] meteoroids, [2] asteroids, comets, [3] and planetoids, [4] as well as by spacecraft carrying unintended contamination by microorganisms, [5] [6] [7] known as directed ...
Panspermia is the hypothesis that life exists throughout the universe, distributed by meteoroids, asteroids, comets [1] and planetoids. [2] It does not attempt to explain how life originated, but shifts the origin to another heavenly body.
The modern version of panspermia holds that life may have been distributed to Earth by meteoroids, asteroids, comets [30] or planetoids. [31] It does not attempt to explain how life originated, but shifts the origin of life to another heavenly body.
Pseudo-panspermia (sometimes called soft panspermia, molecular panspermia or quasi-panspermia) is a well-supported hypothesis for a stage in the origin of life.The theory first asserts that many of the small organic molecules used for life originated in space (for example, being incorporated in the solar nebula, from which the planets condensed).
The context for this proto-evolutionary thought is de Maillet's belief that space contained the seeds of life, invisible spores always available for seeding. This theory of the origin of life is called panspermia. The really important observation he made was that the lower layers of sedimentary rocks contained animals and plants different from ...
Directed panspermia can be motivated by biotic ethics that value the basic patterns of organic gene/protein life with its unique complexity and unity, and its drive for self-propagation. Directed panspermia is becoming possible due to developments in solar sails , precise astrometry , the discovery of extrasolar planets , extremophiles and ...
Though he later downplayed the hypothesis, Orgel, along with Francis Crick, proposed a detailed panspermia scenario for the origin of life on Earth, going so far as to suggest that life on Earth was designed by an alien species and sent to Earth. [16] They proposed a design for the spaceship that aliens could have used to seed life on Earth.
Pages in category "Panspermia" The following 19 pages are in this category, out of 19 total. This list may not reflect recent changes. ...