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Saturn

Topographic projection of a deep pit on Titan.
Posted inEditors' Highlights

Titanic Caves and Where to Find Them

by Laurent G. J. Montési 25 January 202324 January 2023

More than 21,000 pits, depressions, and closed valleys on Titan may provide access to underground voids or caves.

The orange moon Titan passes in front of the striped disk of the planet Saturn, with Saturn’s rings seen edge on, forming a thin line between the moon and planet.
Posted inNews

Long-Gone Moon Could Explain Birth of Saturn’s Rings

Damond Benningfield, Science Writer by Damond Benningfield 20 October 202224 May 2023

Named Chrysalis, the moon could have disintegrated during a close encounter with the gas giant roughly 100 million years ago.

A blue ring of auroral emission glows above Saturn’s north pole.
Posted inNews

Saturn’s Powerful Winds Explain Changes in the Length of Its Day

Katherine Kornei, Science Writer by Katherine Kornei 17 March 20228 August 2022

Atmospheric winds moving at more than 7,000 kilometers per hour distort Saturn’s magnetic field, revealing why spacecraft have measured changes in the length of a day on the ringed world.

Two models of the surface magnetic field of Saturn
Posted inEditors' Highlights

Saturn’s Dynamo Illuminates its Interior

by F. Nimmo 5 May 202115 March 2022

Saturn’s oddly symmetrical magnetic field can be explained by models in which the active dynamo region is overlain by a thick, stable layer cooled more strongly at the poles.

Plumes of ice particles erupt from the surface of Enceladus in an image from the Cassini spacecraft
Posted inResearch Spotlights

Electron Density near Enceladus Shows Orbital Variation

by Morgan Rehnberg 24 June 202010 February 2023

The electron density peaks well after the activity of the moon’s distinctive south polar ice plume reaches its maximum, but the cause of the lag remains puzzling.

Schematic of how oscillations inside Saturn generate spiral density waves in the rings
Posted inEditors' Highlights

Using Saturn’s Rings as a Seismometer

by F. Nimmo 12 May 202024 May 2023

The Cassini spacecraft observed spiral density waves in the rings of Saturn which can be used to probe its interior structure and rotation.

Satellite image of Saturn with bright white storm clouds ringing its northern hemisphere
Posted inNews

New Type of Storm Spotted on Saturn

Javier Barbuzano, Science Writer by Javier Barbuzano 30 October 201917 February 2023

In 2018, four massive storms formed near the planet’s north pole, interacting with each other and affecting a full latitudinal band.

Diagram of two Cassini spacecraft orbit trajectories during the “Grand Finale”
Posted inEditors' Highlights

Newly Discovered Electric Current System Very Close to Saturn

by Michael W. Liemohn 20 August 201916 November 2021

In the tightly confined region between the innermost ring and the planet’s upper atmosphere, the Cassini spacecraft observed signatures of a previously undetected current system.

Satellite image of a moon and rings of Saturn
Posted inNews

The Cassini Mission May Be Over, but New Discoveries Abound

Sarah Derouin, Science Writer by Sarah Derouin 17 July 201917 February 2023

New analysis of high-resolution images shows ring textures and disruptions within Saturn’s rings in unprecedented detail.

Posted inFeatures

How Cassini Ran Rings Around Saturn and What It Helped Us Learn

Damond Benningfield, Science Writer by Damond Benningfield 3 July 201911 January 2022

Once and future rings: During its final 22 orbits, the Cassini spacecraft provided a completely new look at one of our solar system’s most famous features.

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