The moon spent a few million years as a volcanic wasteland, covered with ongoing eruptions that spewed from mountains and ...

In the 1960s, physicist Freeman Dyson proposed that advanced alien civilizations could be building out enormous ...

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It isn’t easy to figure out how the Earth was built, because it happened 4½ billion years ago, and no one was there to watch. So scientists have had to look at what the Earth looks like now and at all ...

The White House's 2026 budget request axes NASA's long-held plan to bring Mars samples to Earth for analysis. Here's why that cancellation would be a mistake.

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