Photos: Atlas 5 rocket soars from West Coast

China launched the third in a series of experimental Shiyan 6 satellites April 8 aboard a Long March 4B rocket, beginning a mission to test new space technologies, including a new super-black coating to absorb stray light and improve the sensitivity of on-board optics.

After a 24-hour delay due to poor weather, an air-launched Northrop Grumman Pegasus XL rocket fired into orbit at 9:59 p.m. EDT Thursday (0159 GMT Friday) after release from a carrier jet at an altitude of 39,000 feet over the Atlantic Ocean northeast of Cape Canaveral. The Pegasus rocket carried NASA’s ICON satellite into orbit to collect measurements of the ionosphere.

Three of Planet’s commercial SkySat Earth-imaging spacecraft will ride to space on top of a stack of SpaceX Starlink satellites next month aboard a Falcon 9 rocket, and three more will hitch a ride on another SpaceX mission later this summer.