Images sent back from the Cassini spacecraft (which has been in orbit around Saturn since 2004) have revealed how the fine structure of the rings is broken up into intricate patterns of thousands of ringlets and gaps.

BBC: Saturn's beauty and power

Space shuttle Endeavour's STS-134 crew carried it into orbit in May 2011, where it was installed on the station's truss structure.

ENGADGET: AMS detects excess of positrons, could suggest existence of dark matter