It analyzes one of the two leading scenarios: That meteorites streaming in from the solar system deposited the building blocks of RNA, a compound similar to DNA that can both store information and oversee the construction of other molecules. “Now we have evidence that says not only that this is plausible but that it’s probable, so that’s pretty exciting,” Ben Pearce, lead author on the paper and a doctoral student at McMaster University in Canada, told Newsweek. Pearce and his colleagues modeled what would have happened in so-called warm little ponds on land during Earth’s early days.

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