Russian rocket technicians working in the French Guiana jungle transported a three-stage Soyuz booster to its launch pad Monday and erected it upright for liftoff Thursday with four communications satellites for O3b Networks.

The next batch of 36 OneWeb internet satellites lifted off at 6:14 p.m. EDT (2214 GMT) from the Vostochny Cosmodrome in Russia’s Far East. The Florida-built broadband satellites rode into orbit on a Russian Soyuz rocket procured under a contract with Arianespace.

NASA hopes to begin launching astronauts to the space station aboard Boeing and SpaceX capsules in the 2017 timeframe, but managers expect to still send crews up aboard Russian spacecraft as a hedge against problems that could force some astronauts to make an emergency landing.