Catalyst - Planet of the Rings

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DURATION: 1 x 28 mins

Catalyst - Planet of the Rings


Girdled by its mighty rings, Saturn is the most recognisable yet least understood of the planets.

Seven years after leaving Earth, Cassini, the most sophisticated planetary explorer ever built, arrives at Saturn for a four-year orbital mission.

The fate of the entire US$3.5 billion expedition depends upon Mission Control being able to thread an unmanned spacecraft, travelling at 80,000 kilometres per hour, through a gap in the rings of Saturn, without hitting even a speck of debris.

Failure would be absolute. Success, an historic moment in the annals of space exploration.


Andrew Holland