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solar system

We are in the middle of solar cycle 25, which means that the Sun has been slowly ramping up its sunspot and flare activity for the past few years.
Posted inFeatures

11 Discoveries Awaiting Us at Solar Max

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 25 August 202230 September 2022

Each solar cycle might seem like the same old story, but one thing has changed significantly since the previous solar maximum–our technology.

Flaky rock particles leak into space from the over-filled sampling device on OSIRIS-REx in this series of black and white images.
Posted inScience Updates

A Time Capsule from the Early Solar System Is En Route to Earth

by C. W. V. Wolner 4 August 20224 August 2022

After an exciting encounter with asteroid Bennu, the OSIRIS-REx mission team looks forward to hitting pay dirt when a hefty sample of ancient planetesimal material is delivered to Earth next year.

NASA的卡西尼号宇宙飞船捕捉到了位于木星前面的木卫二。
Posted inResearch Spotlights

海洋世界的动力可能受旋转控制

by Morgan Rehnberg 27 July 202227 July 2022

新的模拟结果表明,在自然罗斯比数较小的冰卫星上的地下海洋可能主要受到旋转效应的影响。

A small fragment of rock, part of a meteorite from the planet Mars.
Posted inNews

Flipping the Sequence of Martian Formation

Damond Benningfield, Science Writer by Damond Benningfield 15 July 202219 July 2022

Analysis of the Chassigny meteorite suggests the planet acquired most of its interior volatiles from meteorites, not from the solar nebula.

Orbits of the asteroids from the Gaia Data Release 3 up to Jupiter’s distance
Posted inNews

Galaxy Mapper Tracks Asteroids Closer to Home

by Jure Japelj 14 July 202214 July 2022

The Gaia mission’s asteroid survey will help dig deeper into the solar system’s rocky history.

Image of Arrokoth showing the main geological features as well as total surface acceleration.
Posted inEditors' Highlights

A Glimpse at Planet Formation at the Dawn of the Solar System

by Matthias Grott 22 June 202221 December 2022

The low density of Kuiper Belt Object Arrokoth sheds light on the formation of planetesimals in the early solar system.

Europa situated in front of Jupiter.
Posted inResearch Spotlights

Dynamics of Ocean Worlds Likely Controlled by Their Rotation

by Morgan Rehnberg 9 May 202227 July 2022

New simulations suggest that subsurface oceans on icy moons with small natural Rossby numbers may be dominated by rotational effects.

On the left: a view of Pluto, as imaged by the New Horizons spacecraft. On the right: a close-up of an undulating region believed to have been formed by volcanoes that erupted icy material.
Posted inNews

Pluto’s Surface Was Recently Sculpted by Icy Volcanism

Katherine Kornei, Science Writer by Katherine Kornei 2 May 202217 February 2023

Geologically young regions of Pluto’s southern hemisphere were likely resurfaced by cryovolcanism, data from the New Horizons spacecraft reveal.

Parka-clad volunteers collecting a meteorite that fell in Antarctica
Posted inENGAGE, News

Machine Learning Pinpoints Meteorite-Rich Areas in Antarctica

Katherine Kornei, Science Writer by Katherine Kornei 1 March 202227 March 2023

A new algorithm suggests that only a small fraction of meteorites present on the White Continent’s surface have been recovered to date.

Posted inEditors' Highlights

A Deep-Space Origin for Volatile-Rich Asteroids

by Francis Nimmo 19 January 202215 March 2022

Spectral data and modeling suggest that volatile-rich main-belt asteroids initially formed at much greater distances from the Sun (>10 AU).

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Over a dark blue-green square appear the words Special Report: The State of the Science 1 Year On.

Features from AGU Publications

Research Spotlights

How Internal Waves Transport Energy Thousands of Miles Across the Ocean

26 March 202626 March 2026
Editors' Highlights

Machine Learning Could Enhance Earth System Modeling

10 April 20267 April 2026
Editors' Vox

Synergistic Integration of Flood Inundation Modeling Methods

10 April 202610 April 2026
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