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Saturn

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 202029 September 2021

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 202015 March 2022

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

by J. Barbuzano 30 October 2019

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 M. 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

by Sarah Derouin 17 July 201917 June 2022

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

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.

Posted inEditors' Highlights

Cassini Reveals a Missing Link on Saturn’s Rotating Aurora

by Y. Wang 20 November 201816 November 2021

The bright aurorae dancing in the sky are produced by charged particles traveling along the magnetic field lines from tens of planetary radii. By why do aurorae rotate at Saturn but not at Earth?

Posted inEditors' Highlights

Earth-like Oscillations Detected in Saturn’s Stratosphere

by S. Stanley 21 February 201829 March 2022

By comparing Cassini observations spanning ten years, Saturn’s equatorial oscillation is shown to have similarities to Earth’s Quasi-Biennial Oscillation and Semi-Annual Oscillation.

Researchers examine how Saturn’s magnetic field overlaps with that of the Sun.
Posted inResearch Spotlights

Probing the Cusps of Saturn’s Magnetic Field

by Mark Zastrow 10 October 201711 January 2022

Data from the Cassini spacecraft show that the cusp regions of Saturn’s magnetic field—where it connects to the Sun’s magnetic field—have similarities to Earth’s and also intriguing differences.

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