These rocks really shouldn't be there. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The surprising discovery of volcanic, "igneous," rocks by ...

Scientists on NASA's Perseverance mission made a surprising discovery about the composition of rock in Jezero Crater, one that will help them get a better idea of when water existed on Mars, and ...

Scientists on NASA's Perseverance mission made a surprising discovery about the composition of rock in Jezero Crater, one that will help them get a better idea of when water existed on Mars, and ...

The rocks could provide vital information about the geological diversity of the moon's surface and the processes that create its dust and dirt. When you purchase through links on our site, we may earn ...

Volcanic rock is an igneous rock of volcanic origin. Volcanic rocks are usually fine-grained or aphanitic to glassy in texture. They often contain clasts of other rocks and phenocrysts. Phenocrysts ...