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

Europe’s ExoMars orbiter, due to begin a seven-month journey to the red planet March 14, has met its Russian Proton rocket booster as launch preparations enter the final stages at the Baikonur Cosmodrome in Kazakhstan.

A Blagovest communications spacecraft lifted off Monday aboard a Proton rocket to complete a network of four relay satellites in geostationary orbit for the Russian military. The Proton rocket’s Breeze M upper stage successfully delivered the Blagovest spacecraft to its intended orbit nine hours later.

Russian investigators believe a malfunction during separation of the Soyuz rocket’s four liquid-fueled first stage boosters two minutes after liftoff from Kazakhstan led to an emergency landing of a two-man crew heading for the International Space Station, officials said Friday.