A mission will deliver rock and soil from Mars to laboratories on Earth in the 2030s. Mars Sample Return (MSR) is led by NASA ...
Some of the unusual rocks carry stories about water on Mars. One has hints of long-gone microbes. All tell of a dynamic, complex planet.
Scientists discovered Earth's first crust had continental chemical signatures. This challenges beliefs about when these ...
North America is dripping—with sizable blobs of rock sinking from the underside of the continent, beneath the U.S. Midwest, ...
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