Scientists are using an array of instruments to detect other planets, some of which may harbor life—and others that most ...

Volcanoes can look like small mountains or hills. A volcano is an opening in the Earth's crust that allows magma, hot ash and gases to escape. Composite volcanoes are the most common type of ...

Credit: @ Didier Marti/Getty Images A series of relatively young underwater volcanoes has been discovered under the waves of the Pacific Ocean, some of which may even be active. The volcanoes were ...