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solar system

The Sun shines through the edges of Titan’s atmosphere, making it look like a ring of fire in black and white. In the foreground, Saturn’s concentric rings are brightly lit.
Posted inNews

Titanic Shake-Up Could Explain Saturn’s Young Rings and Strange Moons

by Matthew R. Francis 2 April 20262 April 2026

A new model shows how the migration of Titan could have destroyed another moon, creating Saturn’s rings and the moon Hyperion. And, the model suggests, this all happened in the past billion years.

A large observatory on a mountaintop with a starry sky in the background.
Posted inFeatures

Small, Faint, or Fast, Rubin Will Find It

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 1 April 20261 April 2026

The Vera C. Rubin Observatory is set to redraw the map of the solar system by discovering millions of small, fast-moving objects hidden all around us.

Figure from the study.
Posted inEditors' Highlights

ALMA’s New View of the Solar System

by Xi Zhang 16 January 20261 April 2026

High-resolution radio observations link the chemistry of local moons and comets to the birth environments of distant exoplanets.

Two people in shadow explore a dark ice cave with ice stalactites and columnar-appearing sides. Light from the entrance backlights the scene.
Posted inNews

Could Future Mars Habitats Be Made of Ice?

by Olivia Maule 15 December 202515 December 2025

Models suggest that clear ice, sourced and distilled on Mars, could offer a feasible alternative for building stable off-world structures.

A gray peanut-shaped asteroid with a rough, rocky surface.
Posted inNews

What Tumbling Asteroids Tell Us About Their Innards

by Matthew R. Francis 6 November 20256 November 2025

Data from the Gaia space observatory reveal that many slowly spinning asteroids rotate chaotically. A new theory links that chaos to their inner structure and history.

Gray rocks appear against a dark sky, with a bright star in the background.
Posted inNews

A Survey of the Kuiper Belt Hints at an Unseen Planet

Katherine Kornei, Science Writer by Katherine Kornei 16 September 202516 September 2025

An analysis of more than 150 objects in the far reaches of the solar system suggests that a planet more massive than Mercury could be lurking beyond the orbit of Pluto.

Many stars and galaxies including two spiral galaxies and three merging galaxies.
Posted inResearch & Developments

Rubin Observatory Stuns and Awes With Sprawling First Look Images

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 23 June 20251 April 2026

Wow. Just wow.

A heavily shaded, nearly round sphere with wavy edges. The sphere is battered with craters large and small. Some have sharp edges, whereas other edges are blurred. Shadows come from the dark left side and down some of the crater walls. The image is in gray tone.
Posted inNews

The Late, Great Gaia Helps Reveal Asteroid Masses

Nola Taylor Redd, Science Writer by Nola Taylor Tillman 29 May 202529 May 2025

Astronomers are using data from the recently decommissioned star-mapping satellite to help determine masses and more accurate orbits of celestial bodies closer to home.

A single meteor streaks across a twilight sky. Several bare trees are silhouetted against and reflect in a still lake.
Posted inNews

A Geologic Map of the Asteroid Belt

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 28 April 202530 April 2025

Scientists leveraged a global camera network and doorbell cameras to track dozens of meteorites to their asteroid families.

Illustration of two large, cratered rocks in the foreground right. Another rock is seen in the distance to the left. The black background of space shows the hazy Sun and zodiacal light due to dust in the solar system, as well as scattered distant stars. The words “Artist’s Concept” appear in gray at the bottom left.
Posted inNews

Distant Icy Twins Might Actually Be Triplets

by Matthew R. Francis 18 April 202518 April 2025

The trans-Neptunian object Altjira, 44 times farther from the Sun than Earth is, could be the second known trinary, confirming a theory about the formation of our solar system.

Posts pagination

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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

Taming the Seismicity Tsunami with a Scalable Bayesian Framework

7 April 20266 April 2026
Editors' Vox

The Future of Earth’s Future

24 March 202624 March 2026
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