Articles on Neptune

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With giant Saturn hanging in the blackness and sheltering Cassini from the Sun’s blinding glare, the spacecraft viewed the rings as never before. NASA/JPL/Space Science Institute

A brief astronomical history of Saturn’s amazing rings

Although the rings of Saturn may look like a permanent fixture of the planet, they are ever-changing. New analyses of the rings reveal how and when they were made, from what and whether they'll last.

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