Live coverage: Two satellites lift off aboard Ariane 5

A new European weather satellite is ready for launch Tuesday night aboard a Soyuz rocket from French Guiana, and these photos illustrate the final weeks of the spacecraft’s launch campaign.

Videos and photos help tell the story of Thursday’s launch of Europe’s LISA Pathfinder spacecraft, carrying high-tech thrusters and ultra-sensitive motion sensors to be used in a future gravitational wave detection mission, from French Guiana aboard a nearly 100-foot-tall (30-meter) Vega rocket.

A European Vega rocket lifted off Tuesday from the Guiana Space Center on the northern shoreline of South America with a high-resolution reconnaissance satellite for the Moroccan government. Launch occurred at 8:42:31 p.m. EST Tuesday (0142:31 GMT Wednesday) from Kourou, French Guiana.