Arlington -
Hardly a week passes these days without scientists and astronomers reporting on the discovery of a new exoplanet — a planet outwith our solar system.
A schematic of a plasma torus around an exoplanet, which is created by the ions injected from an exomoon's ionosphere into the planet's magnetosphere.
University of Texas at Arlington
This global view of Jupiter's moon, Io, was obtained during the tenth orbit of Jupiter by NASA's Galileo spacecraft. Io, which is slightly larger than Earth's Moon, is the most volcanically active body in the solar system.