ISX will study plasma irregularities in the upper atmosphere by measuring its affect on digital TV signals produced on the ground.
"Teach students about radio waves, aeronautical engineering, space propulsion, and geography by sending a communication signal to schools around the world."
Consists of two 1.5-unit CubeSats; will separate once in orbit and unspool a 250-meter solar sail ribbon between the two. Test novel approaches to using solar sails for propulsion.
"Study variations in the plasma density of the ionosphere by collecting high-frequency radio signals, including those from natural galactic background emissions, from Jupiter, and from transmitters on Earth."
Will test miniaturized imagers.
Optical imaging.