Video: Soyuz launcher ready for rollout

This time lapse video shows Europe’s Automated Transfer Vehicle backing away from the International Space Station for the last time Saturday.

Concern about a possible ammonia coolant leak Wednesday prompted astronauts on the International Space Station to evacuate the U.S. segment of the complex and shelter in the Russian portion of the outpost while flight controllers scrambled to untangle initially confusing telemetry.

Riding a specialized railroad car before dawn Friday, a Soyuz rocket rolled out of a cavernous assembly building and arrived at its launch pad at the Baikonur Cosmodrome in Kazakhstan for liftoff Sunday with American, Russian and Italian crew members heading for the International Space Station.