Sedimentary rock is comprised of sediment, as the name suggests. Over time, tiny minerals, sand, rocks, and debris layer on ...

"Alternatively, ‘Skull Hill’ could be an igneous rock eroded from a nearby outcrop or ejected from an impact crater," Deahn continues. "On Earth and Mars, iron and magnesium are some of the ...

The Perseverance rover finds a mysterious black rock on Mars, “Skull Hill,” which intrigues scientists because of its ...

NASA have made a mind-boggling discovery on Mars – which may have come from an alien world. The peculiar “Skull Hill” rock has left scientists scratching their heads with its biza… ...

NASA’s Mars rover has spotted something out of this world — a mysterious, skull-shaped elevation – sitting on a slope where star-gazers say it doesn’t belong.. The mysterious rock ...

NASA's Perseverance rover has snapped an image of a mysterious rock embedded in the surface of Mars, and researchers aren't sure what to make of it.

Another possibility is that the rock is igneous and formed from volcanic activity. Mars has a long history of volcanism, and igneous rocks can range in tone depending on their mineral content.

This image is from NASAs Mars Perseverance rover, taken by the Mastcam-Z. NASA's Mars rover has pictured a mysterious, skull-shaped rock on the Red Planet whose origin remains uncertain. The ...

In a recent study, geologists say Michigan is home to the oldest known rock in the nation. Watersmeet gneiss is found in Michigan's Upper Peninsula. Minnesota's Morton gneiss previously held the ...

"Alternatively, ‘Skull Hill’ could be an igneous rock eroded from a nearby outcrop or ejected from an impact crater," Deahn continues. "On Earth and Mars, ...

NASA have made a mind-boggling discovery on Mars – which may have come from an alien world. The peculiar “Skull Hill” rock has left scientists scratching their heads with its biza… ...