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The theoretical ability of life to travel from body to body within the solar system.



a hypothesis that living beings were brought to the earth from space. The theory was advanced by the German scientist H. Richterin 1865 and supported by H. Helmholtzand S. Arrhenius.

According to panspermia, living embryos were brought to the earth by meteorites or by means of light pressure. Maintenance of their life in interplanetary space was considered possible because at low temperatures primitive organisms in a state of anabiosis can remain alive. But since it was later proved that they would have been destroyed by ultraviolet and cosmic rays, the transfer of living embryos through space must be regarded as unlikely. The panspermia hypothesis is also methodologically untenable since it does not answer the question of the origin of life.

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This research suggests that panspermia, while certainly not proven, is not impossible either.
The panspermia theory proposes that clay particles act as a catalyst to turn simple organic molecules into more complex structures - starting the process of life.
Professor Chandra Wickramasinghe and colleagues at the University's Centre for Astrobiology have long argued the case for panspermia - the theory that life began inside comets and then spread to habitable planets.
An easy justification for this creative banality is the doctrine of panspermia, according to which all sophonts in the universe originate from the same seeds.
The concept of Panspermia - that life on Earth originated in space - is an ancient one,' said Dr Wickramasinghe, who spends his days at work staring at the skies.
Popularized 100 years ago by Swedish Nobel laureate Svante Arrhenius, panspermia suggests that radiation pressure may have protected living spores as they traveled through space, possibly via comets.
The original panspermia theory did not say that the spores were intentionally sent to other planets, but merely said that microbes in space brought life to planets like the earth.
Their findings have been contested, but the meteorite renewed enthusiasm for the idea of panspermia (Greek: all-seeding)--the interstellar exchange of DNA, a theory that was championed by Francis Crick, who discovered the DNA molecule with two other scientists hall a century ago.
In the early days of the Solar System (and trillions of other solar systems throughout the universe), comets may have played a key role in distributing the organic molecules that are necessary for the genesis of life - or, taken to the next level, that comets and asteroids actually harbor simple life itself, and have thus distributed life to much of the universe, in a process known as panspermia.
There are category mistakes: panspermia is classified together with special creation as a supernatural alternative to naturalistic explanation (p.
He and the eminent astronomer Sir Fred Hoyle first put forward the so-called Panspermia Theory which suggests that life, or the building blocks of life, can be carried to planets by comets or drifting interstellar dust particles.