Live coverage: 400th Proton rocket takes off with Russian satellite

The last flight of the single-core variant of United Launch Alliance’s Delta 4 rocket lifted off at 9:06 a.m. EDT (1306 GMT) Thursday from Cape Canaveral Air Force Station, Florida. The 207-foot-tall launcher carried a GPS navigation satellite into orbit for the U.S. Air Force.

In a mission marking the end of an era, NASA astronaut and former virus hunter Kate Rubins, using NASA’s last currently contracted seat on a Russian Soyuz spacecraft, blasts off Wednesday with two cosmonaut crewmates on a flight to the International Space Station.

Bad weather offshore has forced SpaceX and NASA to delay Thursday’s planned launch of the Crew Dragon by a day. Better conditions are expected on Friday for a 5:49 a.m. EDT (0949 GMT) liftoff from the Kennedy Space Center.