The size of three cereal boxes and weighing only 26 lb (11.8 kg) each, the miniature satellites will be used to demonstrate new technologies in orbit.
CubeSats have come a long way since they were first introduced as a platform for training future space engineers. Today, they are increasingly being used to track ships, gather low-Earth orbit data, and two are even now en route to the planet Mars. Not bad for spacecraft that consist of 4 x 4 x 4 in (10 x 10 x 10 cm) cubes stuck together and run by computers on the level of a smartphone.
The three CubeSats that will launch from NASA's Wallops Flight Facility in Virginia on May 21, 2018 will be removed from the unmanned cargo ship and then deployed into low-Earth orbit.