NASA's newest Mars rover snapped photos of rocky outcroppings that jut out from the alien soil. Scientists say they look like the remnants of an ancient stream bed where water once flowed on the ...

A rock formation in the Mississippi River normally only reachable by boat is accessible by foot for the second year in a row as water levels plummet.. Tower Rock juts out of the Mississippi River ...

Surf's up! Well, not exactly. Rock and sand formations that are shaped like waves are a wonder on this Earth, but they surprisingly don't have much to do with the ocean. In fact, they'll require ...

A nother day, another step closer to finding out whether life once existed on Mars. A new study suggests Mars rocks collected ...

The rock looks like a thick collection of flaky fragments. Its delicate features were formed over a long stretch where clay was deposited and hardened before each new layer accumulated.

“Layered rocks like this often form in water, ... This is what the Martian rock looks like after the rover used its abrading tool, revealing possible minerals in the rock. NASA.