Back when dinosaurs existed, there used to be volcanoes that w | Science World

Back when dinosaurs existed, there used to be volcanoes that were erupting on the moon.

Scientists previously thought that the moon's volcanic activity died down a billion years ago. But new data from NASA's Lunar Reconnaissance Orbiter, or LRO, hints that lunar lava flowed much more recently, perhaps less than 100 million years ago.

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