Video: Soyuz MS-01 leaves the space station for landing

A Soyuz booster vaulted into a sunset sky over French Guiana on Wednesday evening, arcing north from the jungle spaceport in South America with six satellites to inaugurate OneWeb’s global broadband network.

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.

A Soyuz rocket is standing on a launch pad at the Vostochny Cosmodrome in Russia’s Far East for liftoff Sunday with the next 36 satellites for OneWeb’s internet network, the sixth Soyuz mission dedicated to the commercial broadband constellation.