Tiny rockets may advance minisatellites

Each of the 1,000 or more kilograms of material in an average communications satellite can cost $10,000 in launch costs alone.

NEW THRUST. Test firing of the new compact plasma accelerator. The stream of ions emerging from the minirocket can be used to steer and maneuver tiny spacecraft. NASA Glenn Research Center

To reduce costs, engineers have been developing what they call microspacecraft that perform many functions of their larger counterparts while packing only 10 percent or less of the mass.