Ryugu’s samples reveal that water activity on asteroids lasted far longer than scientists thought, possibly reshaping theories of how Earth gained its oceans. A billion-year-old impact may have melted ...

Scientists are sharpening their forecasts for how long Earth can remain a comfortable home for complex organisms, and the latest work points to a much earlier cutoff than the classic textbook ...

For the first time, scientists have seen a subduction zone actively breaking apart beneath the Pacific Northwest. Seismic data show the oceanic plate tearing into fragments, forming microplates in a ...

The internet is buzzing after reports claimed NASA confirmed Earth now has two moons. But before you picture a new glowing orb in the sky, scientists say that’s not exactly the case. What researchers ...