SpaceX capsule departs station as four astronauts head home

This image from video provided by NASA shows the SpaceX capsule as it departs the International Space Station on Saturday (NASA/AP)

A SpaceX capsule carrying four astronauts departed the International Space Station late on Saturday, aiming for a rare night time splashdown to end the company’s second crew flight.

It would be the first US splashdown in darkness since Apollo 8′s crew returned from the moon in 1968.