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once looked a lot more like Earth. How it evolved from that point to where it is today is a question with deep implications, not just for our own planet's future, but for the search for life outside the Solar System.
A comparison between what the surface of Venus looks like today and how scientists think it might have looked with water billions of years ago . couldn't account for the amount of water Venus should have lost, given that it should have had more or less the same amount of the stuff as Earth acquired during its formation billions of years ago.
The researchers, co-led by Chaffin and his colleague, planetary scientist Eryn Cangi of UC Boulder, sought to investigate this discrepancy by performing computer simulations of processes in Venus' atmosphere. And their results pointed the finger at a process that has been overlooked for 50 years: the recombination of a molecule called HCO+.
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