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orbits & rotations

Neptune imaged by Voyager 2 in 1989
Posted inNews

New Tiny Moon of Neptune Discovered

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 20 February 20194 April 2023

The moon’s size and orbit point to it being the remnant of a collision with Neptune’s moon Proteus.

Researchers assess how space storms impact satellites in geosynchronous orbit
Posted inResearch Spotlights

How Space Storms Affect the Satellite Superhighway

by E. Underwood 30 April 201813 April 2022

A powerful numerical model reveals how space weather disturbs magnetic field at geosynchronous orbit.

Posted inNews

Reversing Earth’s Spin Moves Deserts, Reshapes Ocean Currents

Bas den Hond, Science Writer by Bas den Hond 10 April 201823 February 2023

A climate model with reversed rotation of Earth helps climatologists and oceanographers understand why our planet is the way it is and reveals how different it could have been.

A new study links Milankovitch cycles to the onset of glacial periods
Posted inResearch Spotlights

How Variations in Earth’s Orbit Triggered the Ice Ages

by L. Strelich 1 June 201716 August 2022

Researchers pinpoint how Milankovitch cycles have driven ice growth and influenced the timing of glacial periods.

Four identical MMS spacecraft—one of which is pictured in this illustration—were launched in 2015 to study the process of magnetic reconnection.
Posted inResearch Spotlights

New Explanation for “Meandering” Electrons Orbiting Earth

by Mark Zastrow 11 May 201718 July 2023

A new study proposes a simpler theory to explain a class of electrons zipping around Earth, propelled by magnetic explosions.

How Earth precesses and nutates gives clues to interior processes.
Posted inScience Updates

Earth's Wobbly Path Gives Clues to Its Core

by V. Dehant and R. Gross 11 April 20178 April 2022

Understanding the Earth Core and Nutation; Brussels, Belgium, 19–21 September 2016

Researchers investigate the layers of ice and dust at Mars’s north pole.
Posted inResearch Spotlights

How Mars Got Its Layered North Polar Cap

by E. Underwood 8 February 20178 August 2022

Orbital wobbling shaped the dome of ice and dust at the planet's north pole.

Posted inResearch Spotlights

Earth's Carbon-Climate Feedbacks Varied in Past Warming Episodes

by Terri Cook 29 November 201626 January 2023

Records from drill holes in the eastern equatorial Pacific indicate that Earth's orbital eccentricity played an important role in controlling climate as the planet warmed.

An image of Jupiter taken by NASA's Juno spacecraft on 27 August.
Posted inNews

Juno Makes Closest Ever Orbit of Jupiter

by Randy Showstack 29 August 201624 April 2023

NASA plans to release more pictures soon, including views of the planet's atmosphere and its north and south poles, all in unprecedented detail.

An illustration depicts the Juno spacecraft successfully entering Jupiter's orbit.
Posted inNews

Juno Spacecraft Nails Its Orbit Around Jupiter

by Randy Showstack 5 July 201625 April 2023

The mission will spend 20 months collecting data on the planet's core, its magnetic field, and the composition of its atmosphere.

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Features from AGU Publications

Research Spotlights

More Bubbles Means More Variation in Ocean Carbon Storage

8 July 20258 July 2025
Editors' Highlights

Defining the Tropopause in Chemical Transport Models

8 July 20258 July 2025
Editors' Vox

Water Tracks: The Veins of Thawing Landscapes

25 June 202525 June 2025
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