Cassini Prepares to Enter Saturn Orbit

Voyager Image of Saturn

This 1981 Voyager 2 image shows the vast Saturn ring system, as well as three small icy satellites and the shadow of a fourth. NASA hide caption

itoggle caption NASA

This week, the Cassini space probe is scheduled to begin its four-year exploration of the moons and rings of Saturn. It will be the first spacecraft to enter orbit around Saturn. Scientists hope its journey will give new insight into the history of our solar system. NPR's Richard Harris reports.

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