Historically experts have theorized that complex life began on our planet around 635 million years ago, as the first organisms evolved in the primordial ooze. However, experts now say that new evidence challenges that timeline and that complex life could have begun more than a billion years before that.
Specifically, what remains in question is how billions of years ago the building of life — the nucleic acids that make up our DNA , proteins and metabolites — “emerged spontaneously,” the professor of chemical biology added.
Simulated “cloud to ground” lightning strikes yielded high-energy sparks capable of transforming carbon dioxide and nitrogen “into highly reactive compounds.” Specifically, carbon dioxide could be reduced to carbon monoxide and formic acid and nitrogen could morph into nitrate, nitrite, and ammonium ions.“Lightning has been observed on Jupiter and Saturn; plasmas and plasma-induced chemistry can exist beyond our solar system,” lead author Haihui Joy Jiang said.
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