Volcanic Rock

A volcano is a rupture in the crust of the Earth, that allows hot lava, volcanic ash and gases to escape from below the surface. They are generally found where tectonic plates are diverging or converging.

Earth Science

A major component of NASA’s Earth Science Division is a coordinated series of satellite and airborne missions for long-term global observations of the land surface, biosphere, solid Earth, atmosphere, and oceans. This coordinated approach enables an improved understanding of the Earth as an integrated system. NASA is completing the development and launch of a set of Foundational missions, new Decadal Survey missions, and Climate Continuity missions.

By Boaworm (Own work) [CC BY 3.0 (http://creativecommons.org/licenses/by/3.0)], via Wikimedia Commons