The Curiosity rover just avoided a near run-in with some razor-sharp rocks on Mars. The robotic explorer, which landed on the red planet nearly 10 years ago, has spent the last month climbing the ...

They were typically made from volcanic rocks found along rivers. ... Even if I had managed to make one, I doubt my wife Grace would have looked kindly on giving little girls sharp rocks.

NASA's Curiosity rover has encountered patches of sharp “gator-back” rocks causing mission planners to look for a new route ...

Stones with a sharp edge, but also well suited to be held in the hand – which the team calls “naturaliths” – are abundant where suitable rocks are present, the team argues.

This mystery initially began with the discovery of Clovis points, an array of various-sized sharp rocks made from material like flint or jasper that use fluted indentations at the base of the ...

Stones with a sharp edge, but also well suited to be held in the hand – which the team calls “naturaliths” – are abundant where suitable rocks are present, the team argues.