cover image


Hypothesis on the interstellar spreading of primordial life / From Wikipedia, the free encyclopedia

Dear Wikiwand AI, let's keep it short by simply answering these key questions:

Can you list the top facts and stats about Panspermia?

Summarize this article for a 10 year old


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] Panspermia is a fringe theory with little support amongst mainstream scientists.[8] Critics argue that it does not answer the question of the origin of life but merely places it on another celestial body. It is also criticized because it cannot be tested experimentally.[9]

Panspermia proposes that organisms such as bacteria, complete with their DNA, could be transported by means such as comets through space to planets including Earth.

Panspermia proposes that microscopic lifeforms which can survive the effects of space (such as extremophiles) can become trapped in debris ejected into space after collisions between planets and small Solar System bodies that harbor life.[10] Panspermia studies concentrate not on how life began but on methods that may distribute it in the Universe.[11][12][13]

Pseudo-panspermia (sometimes called soft panspermia or molecular panspermia) is the well-attested hypothesis that many of the pre-biotic organic building-blocks of life originated in space, became incorporated in the solar nebula from which planets condensed, and were further—and continuously—distributed to planetary surfaces where life then emerged.[14][15]

Oops something went wrong: