NASA spacecraft observes asteroid Bennu's boulder 'body armor'

Asteroid Bennu's boulder-covered surface gives it protection against small meteoroid impacts, according to observations of craters by NASA's OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, Security-Regolith ...

Curiosity rover finds an ancient oasis on Mars

If you could travel back in time 3.5 billion years, what would Mars look like? The picture is evolving among scientists working with NASA's Curiosity rover.

The Arctic is burning in a whole new way

"Zombie fires" and burning of fire-resistant vegetation are new features driving Arctic fires—with strong consequences for the global climate—warn international fire scientists in a commentary published in Nature Geoscience.

Researchers find Greenland glacial meltwaters rich in mercury

New research shows that concentrations of the toxic element mercury in rivers and fjords connected to the Greenland Ice Sheet are comparable to rivers in industrial China, an unexpected finding that is raising questions about ...

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