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

Poised to loft a Russian-German X-ray astronomy observatory into space Friday, a Proton rocket returned to its launch pad Tuesday at the Baikonur Cosmodrome in Kazakhstan after a three-week delay to replace a drained battery on the vehicle.

Five days after launching from Japan, an HTV supply ship arrived Monday at the International Space Station. Capture of the HTV with the station’s robotic arm occurred at 8:13 a.m. EDT (1213 GMT). It’s the last cargo mission to the space station before the arrival of two NASA astronauts on the first crewed U.S. flight to the orbiting research facility since 2011.

Europe’s ExoMars orbiter was enclosed inside the nose cone of its Proton rocket Wednesday ahead of its March 14 launch toward the red planet.