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Stories, updates, insights, and original analysis from The Planetary Society.

NASA Then & Now

A collection of before and after slider images showing how views of planets in our solar system have changed over the years since NASA was created.

How long is a day on Saturn?

One of the Cassini mission's goals was to figure out how long a day on Saturn is. We still don't know. A new paper reports a measurement of the rotation period of Saturn that is different from past measurements.

A new storm on Saturn!

On March 29, vigilant astronomer Maciel Bassani Sparrenberger discovered that a new bright spot had broken out in Saturn's high northern latitudes.

Cassini: The dying of the light

Cassini is no more. At 10:31 according to its own clock, its thrusters could no longer hold its radio antenna pointed at Earth, and it turned away. A minute later, it vaporized in Saturn’s atmosphere. Its atoms are part of Saturn now.

Saturn and Titan in the Milky Way

An unusual photo of Saturn by astrophotographer Damian Peach shows the planet and its largest moon nestled among the star-filled lane of the Milky Way.

Trusty Cassini survives first dive between Saturn and its rings

Cheers erupted in the Von Karman auditorium at the Jet Propulsion Laboratory early Thursday morning as a squiggly green line on a graph developed a crisp, tall peak, signifying that the Cassini spacecraft was calling home after surviving its first plunge between Saturn and its ring system.

Saturn's Ring Particles

Artist and astrophotographer Judy Schmidt brings us a view from within the rings of Saturn.

A week in the solar system

A roundup of pretty pictures and news from our robotic ambassadors around the solar system, from November 4 through 8.

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