Video: Russian cargo ship spinning

Crew members on the International Space Station over the weekend continued trying to pinpoint the location of a small air leak in the research outpost’s Russian Zvezda service module, one of the oldest sections of the orbiting laboratory.

A Russian Soyuz spacecraft carrying two cosmonauts and a veteran NASA astronaut blasted off from Kazakhstan Friday, chased down the International Space Station and glided to a smooth automated docking, boosting the lab’s crew back to six.

SpaceX completed Friday the last drop test of the Dragon crew capsule’s parachutes before the first launch of astronauts on the human-rated ship May 27, while technicians at Cape Canaveral have mated the spacecraft’s crew module with its unpressurized trunk section.