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Life on Earth may have sparked into existence as early as 4.4 billion years ago, hundreds of millions of years sooner than previously thought possible, according to a study to be published Thursday.
"All the criteria necessary for life" - liquid water, energy sources such as sunlight, and chemical building blocks from meteors or Earth itself - "were present at least since 4.38 billion years ago," ...
"The antiquity of life may not be very much less than the Earth itself," ...
Research published last week shows how a series of chemical reactions on early Earth could have produced ribonucleic acid, or RNA, a single-stranded cousin of the DNA that is the blueprint for all life.
Pushing back the date at which self-replicating life forms first emerged from the primordial soup would also explain how the relatively complex organisms that fossils records show existed 3.5 to 3.8 billion years ago could have had time to evolve.
Originally posted by justsomeboreddude
That would be awesome if life formed as soon as the crust formed or even before. Just think of the implications that would give toward life being nearly everywhere in the universe.