Q&A with Guglielmo Aglietti, RemoveDebris principal investigator (members only)

The 13th and 14th operational members of Europe’s Galileo navigation satellite network are set for liftoff Tuesday aboard a Soyuz rocket from French Guiana. Track the progress of the flight with this timeline of key events.

A SpaceX Falcon 9 rocket powered by a reused first stage climbed into orbit Tuesday from California’s Central Coast, carrying five satellites to upgrade Iridium’s global messaging service and two research craft to study Earth’s water cycle.

Six satellites are set to ride a light-class European Vega rocket into orbit from French Guiana on Wednesday night, the first Vega launch since a failure last year that officials attributed to human error.