Deep below Earth's surface, rock and mineral formations lay hidden with a secret brilliance. Under a black light, the chemicals fossilized within shine in brilliant hues of pink, blue and green.

A cave in southwestern China has yielded seven fossils that belonged to an enigmatic population of extinct humans known as ...

Fresh evidence from orbit is sharpening one of planetary science’s most tantalizing possibilities: that hidden caverns on Mars could shelter traces of life. Instead of focusing only on dried-up ...

Through the intricate study of lava tubes—caves formed following volcanic eruptions when lava cools down—an international team of researchers has uncovered clues about Earth's ancient environments ...

In two connected studies published in the Journal of Geophysical Research: Planets, “Fundamental Science and Engineering Questions in Planetary Cave Exploration” and “Planetary Caves: A Solar System ...

Mars skylights like this could be the mouths of caves formed by lava tubes. NASA wants to explore them. Credit: NASA / JPL-Caltech / Univ. of Arizona Ever since scientists have had an orbiter's view ...

Considering the menagerie of critters living in cozy caves across Earth, it was only a matter of time before scientists extended their hunt for alien life to such cavities furnishing the rest of our ...

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