Video: Time lapse of ATV’s final departure from ISS

A Soyuz rocket lifted off from South America late Thursday to haul up the next two satellites for Europe’s Galileo navigation system, giving the network its ninth and 10th operational members. Launch occurred at 0208:10 GMT Friday (10:08:10 p.m. EDT Thursday).

Two astronauts ventured outside the International Space Station Friday for the first of four spacewalks to repair a $2 billion cosmic ray detector, breezing through work to prep the device for invasive surgery to splice in new coolant pumps and extend the instrument’s life probing the composition of the universe.

An Ariane 5 rocket took off on a rare morning launch Thursday with four Galileo navigation satellites, the heavy-lifter’s first flight in support of the European positioning and timing fleet. Liftoff from French Guiana occurred at 1306 GMT (8:06 a.m. EST).