Metamorphic rock is the result of the transformation of a pre-existing rock type, the protolith, in a process called metamorphism, which means "change in form". The protolith is subjected to heat and ...

There are three types of rock found on Earth. These are igneous, metamorphic and sedimentary. Each rock type is formed in a different way. For example, the rock ...

A rock is intriguing scientists on Mars. The Perseverance rover has discovered a unique striped formation in the Jezero crater. This 8-inch (20 cm) block, named "Freya Castle," is raising questions ...