Video: Falcon 9 rocket fires engines in pre-launch test (members only)

A Russian cosmonaut, a NASA flight engineer and a Japanese physician-astronaut strapped into their Soyuz ferry ship early Sunday, undocked from the International Space Station and plunged back to Earth, landing on the steppe of Kazakhstan to close out a 168-day mission.

A United Launch Alliance Delta 4-Heavy rocket lifted off from Vandenberg Air Force Base in California at 1:47 p.m. PDT (4:47 p.m. EDT; 2047 GMT) Monday with a classified satellite for the National Reconnaissance Office, the U.S. government’s spy satellite agency.

Continuing a series of delays keeping NASA’s Ionospheric Connection Explorer on Earth, NASA announced Tuesday that the satellite’s launch aboard an air-dropped Northrop Grumman Pegasus XL rocket will not occur as scheduled Friday.