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This was a needle-in-a-haystack search with no guarantee that the needle exists, finding a change that could be clearly confirmed as real was absolutely a surprise. We were pretty certain that Venus is volcanically active, but we didn’t know if eruptions occur every few months, years, once every 10,000 years, or longer. All options could have fit with existing data. Unless we got incredibly lucky, we now know the frequency is every few months or so, similar to the family of Earth’s big basaltic intraplate volcanoes like Hawaii, the Galapagos Islands, Canary Islands, etc.