Video: Atlas 5 rocket launches space station cargo mission

A Ukrainian-built Zenit booster and a Russian-made Fregat upper stage launched with an Angolan communications satellite Tuesday from the Baikonur Cosmodrome in Kazakhstan, but engineers lost contact with the spacecraft soon after its deployment in orbit more than 22,000 miles above Earth.

SpaceX’s Falcon 9 rocket took off from Cape Canaveral on Friday afternoon, sending a Dragon cargo freighter on the way to the International Space Station as the launcher’s first stage booster returned to Earth aboard a floating platform.

With the Atlas 5 rocket that will boost it into space now assembled and waiting, a $408 million NASA communications satellite is in final preparations for its science data relay mission.