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Planetary magnetospheres

Jupiter as seen by the Juno spacecraft on 17 February 2020
Posted inResearch Spotlights

A Juno Era Model of the Jovian Magnetosphere

by Morgan Rehnberg 9 November 2020

Updating a model developed during the Voyager flybys will enable better mission planning and a deeper understanding of Juno data.

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.

Illustration of Jupiter’s magnetosphere and innermost planets
Posted inResearch Spotlights

Two Moons and a Magnetosphere

by Sarah Stanley 21 April 202029 September 2021

Decades of research have illuminated how Io and Europa shape—and are shaped by—Jupiter’s giant magnetosphere.

Side-by-side illustrations of a Martian horizon featuring a dry landscape and a wet landscape
Posted inResearch Spotlights

How Mars’s Magnetic Field Let Its Atmosphere Slip Away

by Mark Zastrow 31 March 202029 September 2021

A planet’s magnetic field usually protects its atmosphere from being blown away by its star. But new research suggests Mars’s weak magnetic field may have helped its atmosphere escape.

Jupiter’s aurora captured by the Hubble Space Telescope
Posted inNews

Computers Tease Out Secrets of Jupiter’s Aurorae

by Nola Taylor Tillman 21 November 2019

Aurorae once classified by human eyes are now being sorted by machines. The change may help astronomers understand how the mysterious features are powered.

Researchers look at satellite data to analyze the oxygen cloud around Io
Posted inResearch Spotlights

The Oxygen Neutral Cloud Surrounding Jupiter’s Volcanic Moon

by Kate Wheeling 20 June 2018

Japan’s Hisaki satellite takes measurements of faint oxygen emissions from Io.

Posted inEditors' Highlights

A Close-in Look at Saturn’s Periodic Space Bubble

by M. Liemohn 24 January 2018

When it comes to Saturn’s space environment, summer wins over winter in controlling the periodic flows of electrically charged particles and magnetic fields.

Researchers spot new details in Juno satellite images of Jupiter’s aurora
Posted inResearch Spotlights

Juno Gets Spectacular View of Jupiter’s Aurora

by Mark Zastrow 7 September 201714 October 2017

The NASA spacecraft has taken images of Jupiter’s powerful aurora dancing around its poles, revealing never-before-seen details in their structure.

New research suggests Jupiter’s aurora are produced by processes unlike those on Earth
Posted inResearch Spotlights

Mysterious Particle Beams Found over Jupiter’s Poles

by Mark Zastrow 19 June 2017

The unexpected character of the beams, revealed by NASA’s Juno spacecraft, suggests that the processes that produce Jupiter’s auroras are unlike those on Earth.

Posted inEditors' Vox

Filling Earth’s Space Environment from the Sun or the Earth?

by R. Chappell 27 March 201728 September 2021

The editor of a new book describes how a unique combination of the monograph and video show that a four-decade old paradigm in solar-terrestrial physics is changing.

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From AGU Journals

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Reviews of Geophysics
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HOT ARTICLE
Geophysical Research Letters
“Relating Slip Behavior to Off-Fault Deformation Using Physical Models”
By Emily O. Ross et al.


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