SpaceX capsules parked side-by-side at ISS for first time

The Dragon cargo capsule docks at the International Space Station (Nasa/AP)

A SpaceX supply ship bringing Christmas goodies has arrived at the International Space Station, parking alongside another Dragon capsule that carried up astronauts three weeks ago.

It is the first time Elon Musk’s company has two Dragons at the orbiting lab, filling both available slots.