The Curiosity Mars rover photographed more rocks that are shaped like coral on the red planet's surface. Researchers said the rocks were evidence that at one point water was on Mars. The Curiosity ...

The stone found along the Cape south coast in 2018 on the left compared to the shape of a blue stingray endemic to southern Africa on the right (all images courtesy Charles W. Helm) A team of ...

NASA has captured an image of a coral-like rock on Mars estimated to be several billions of years old. The space agency's Curiosity Rover sent back images of a small, wind-eroded rock that resembles a ...

A paper published on January 29 in Rock Art Research says that a prehistoric rock, which to the untrained eye looks rather unassuming, may in fact be a 130,000 year-old “sand sculpture” animal carving ...