NASA has selected 24 small satellites, including three from NASA's Jet Propulsion Laboratory in Pasadena, Calif., to fly as auxiliary payloads aboard rockets planned to launch in 2014, 2015 and 2016. The proposed CubeSats come from universities across the country, a Florida high school, several non-profit organizations and NASA field centers.
CubeSats belong to a class of research spacecraft called nanosatellites. The cube-shaped satellites measure about 4 inches (10 centimeters) on each side, have a volume of about 1 quart (1 liter), and weigh less than 3 pounds (1.1 kilograms).