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  2. Panspermia - Wikipedia

    en.wikipedia.org/wiki/Panspermia

    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 ...

  3. Pseudo-panspermia - Wikipedia

    en.wikipedia.org/wiki/Pseudo-panspermia

    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).

  4. Directed panspermia - Wikipedia

    en.wikipedia.org/wiki/Directed_panspermia

    Directed panspermia is a type of panspermia that implies the deliberate transport of microorganisms into space to be used as introduced species on other astronomical objects. Historically, Shklovskii and Sagan (1966) and Crick and Orgel (1973) hypothesized that life on the Earth may have been seeded deliberately by other civilizations.

  5. History of research into the origin of life - Wikipedia

    en.wikipedia.org/wiki/History_of_research_into...

    Antonie van Leeuwenhoek. Traditional religion attributed the origin of life to deities who created the natural world. Spontaneous generation, the first naturalistic theory of abiogenesis, goes back to Aristotle and ancient Greek philosophy, and continued to have support in Western scholarship until the 19th century. [15]

  6. Abiogenesis - Wikipedia

    en.wikipedia.org/wiki/Abiogenesis

    Panspermia did not get much scientific support and deflects the need of an answer instead of explaining observable phenomena. Although interest in panspermia grew when traces of organic materials were found in meteorites, it is currently accepted that life started locally on Earth.

  7. Zecharia Sitchin - Wikipedia

    en.wikipedia.org/wiki/Zecharia_Sitchin

    Zecharia Sitchin (July 11, 1920 – October 9, 2010) [1] was an author of a number of books proposing an explanation for human origins involving ancient astronauts.Sitchin attributed the creation of the ancient Sumerian culture to the Anunnaki, which he claimed was a race of extraterrestrials from a planet beyond Neptune called Nibiru.

  8. List of alleged extraterrestrial beings - Wikipedia

    en.wikipedia.org/wiki/List_of_alleged...

    Orion reptillian-humanoid matriarchy (see reptilian conspiracy theory) List of reptilian humanoids; Lizard Man of Scape Ore Swamp; Fictionalized portrayals: They Live, V, Stargate, Star Trek, Worldwar, Gamehendge, etc. Tall, scaly humanoids. Reptilian humanoid beings date back at least as far as Ancient Egypt, with the crocodile-headed river ...

  9. Information panspermia - Wikipedia

    en.wikipedia.org/wiki/Information_panspermia

    Information panspermia is the concept of life forms travelling across the universe by means of transmission of compressed information representing said life forms e.g. via genome coding, which can then enable the recovery of intelligent life.