Wisconsin moonstones are only found in a small corner of Marathon County. This business allows people to dig for them.

A hike around the lovely Shaddox Hollow Trail at Hobbs State Park-Conservation Area leads to forest, streams and rock. Lots and lots of rock. So much rock that a self-guided geology tour now lets ...

The Apollo mission recovered a fragment known as sample 76535, which showed virtually no signs of violent shocks from deep ...

About 4.5 billion years ago, a Mars-sized object smashed into the young Earth, spraying debris that coalesced to form the moon, many scientists think. Some remnants of that object, called Theia, exist ...

A severe drought caused a rock formation in the Mississippi River to be visible. It's a rare sight, but those wishing to see might be disappointed. The drought, this week, caused water levels near ...

The Perseverance rover’s new findings set the stage for bringing Martian samples back to Earth to test whether microbes once ...