Did life exist BEFORE Earth? Researchers calculate it began 10 billion years ago – predating our planet
Worldwide, Daily news | ankakh | April 20, 2013 8:42
Life existed before Earth, and may have originated outside out solar system, researchers have claimed.
The results suggest life first appeared about 10 billion years ago – long before Earth, which is believed to be 4.5 billion years old.
The theory backs the idea of panspermia, a theory that proposes that life forms that can survive the effects of space, such as extremophiles, become trapped in debris that is ejected into space after collisions between asteroids and planets that harbour life.
These life-forms may travel dormant for an extended amount of time before colliding randomly with other planets or intermingling with protoplanetary disks.
If met with ideal conditions on a new planet’s surfaces, the bacteria become active and the process of evolution begins, it is believed.
However, the researchers admit much of their work is theoretical.
Sharov said that if he had to bet on it, he’d say ‘it’s 99 percent true that life started before Earth — but we should leave 1 percent for some wild chance that we haven’t accounted for.’
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