Click for next articleArtist's illustration of a satellite operating in very low Earth orbit. The technology Kreios Space has been developing is called air-breathing electric propulsion (ABEP). "Kreios is building the satellites that make sustained operations in very low Earth orbit possible," Kreios Space CEO Adrián Senar said in the Aug. 4 announcement. Kreios Space chose Lithuanian-based Kongsberg NanoAvionics to provide the satellite bus that will carry the ABEP system into orbit for the test run. A new, very low frontierSatellites in low Earth orbit (LEO) — altitudes of roughly 100 miles to 1,200 miles (160 to 2,000 km) — generally don't need constant propulsion.