Q&A with Marc Eisenberg, Orbcomm’s chief executive

A pioneering Northrop Grumman-built satellite designed to dock with an aging spacecraft more than 22,000 miles above Earth, then extend its life with the aid of solar-electric thrusters, is set for launch Wednesday from Kazakhstan aboard a Proton rocket.

A Chinese television broadcasting satellite lifted off Saturday aboard a Long March 3B booster, the 300th orbital launch by the country’s Long March rocket family since 1970.

A U.S.-built, Bulgarian-owned broadcast satellite will launch in mid-June from the Kennedy Space Center in Florida aboard a previously-used SpaceX Falcon 9 booster that first flew in January, officials said Friday.