Arianespace

Follow the key events of the Soyuz rocket’s ascent into orbit from the Guiana Space Center with two satellites for Europe’s Galileo navigation system.

The next pair of spacecraft to join Europe’s growing Galileo navigation system, a civilian-run analog to the U.S. military’s Global Positioning System, will be added to the tip of a Russian Soyuz booster overnight Monday after the rocket’s rollout earlier in the day in French Guiana.