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moons

The mountain Telegonus Mensae on Io. In the bottom center of the image is a dark spot that could be an impact crater.
Posted inNews

Amateur Astronomer Finds a Possible Crater on Io

by Chiara Villanueva 15 December 202315 December 2023

The most volcanically active body in the solar system may have an impact crater, a discovery spotted by a curious nonprofessional scientist.

Illustration of a cross section of Mars with blue and black lines, representing seismic waves, bouncing off internal layers.
Posted inNews

Mars’s Interior May Have an Extra Layer of Molten Rock

Javier Barbuzano, Science Writer by Javier Barbuzano 29 November 202329 November 2023

New findings suggest that unlike in Earth, the bottom of Mars’s mantle is a sea of molten silicate rock.

Representación artística de un criovolcán en erupción en Tritón, luna de Neptuno
Posted inNews

La canción de hielo y fuego del criovulcanismo

Erik Klemetti, Science Writer by Erik Klemetti 16 October 202316 October 2023

Las lunas oceánicas del sistema solar exterior nos dan pistas sobre volcanes de hielo, fuentes hidrotermales, y la tentadora posibilidad de habitabilidad.

Uranus is a shiny blue-white orb, slightly off center in this image. Its rings are seen nearly face on, and six bright blue dots show the six brightest moons of the planet. There are several reddish galaxies in the background.
Posted inFeatures

Uranus: Time to Boldly Go

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 25 September 202325 September 2023

Scientists say now is the time to unlock the secrets of Uranus and suggest a low-cost, low-risk way to do so.

An artist’s depiction of a cryovolcano is erupting on Neptune’s moon Triton.
Posted inFeatures

Cryovolcanism’s Song of Ice and Fire

Erik Klemetti, Science Writer by Erik Klemetti 25 September 202316 October 2023

Ocean moons of the outer solar system hint at ice volcanoes, hydrothermal vents, and the tantalizing chance of habitability.

Illustration of a water-covered planet viewed from its surface: In the foreground is rippling water reflecting pink, yellow, and white light from a glowing phenomenon in the distance, in the middle of the illustration. Surrounding the bright phenomenon are bright stars and translucent clouds visible in front of a dark background.
Posted inAGU News

Oceans of Opportunity

by Caryl-Sue Micalizio 25 September 202329 September 2023

Our solar system’s ocean worlds offer scientists intriguing instances of exotic phenomena and fresh prospects in the elusive search for planetary habitability.

View of the half-illuminated Moon surrounded by black space
Posted inResearch Spotlights

Visualizing the Deep Insides of Planets and Moons

Sarah Stanley, Science Writer by Sarah Stanley 10 August 202314 August 2023

A novel method uses gravity data to determine where density anomalies lie inside planetary bodies.

Roughly 20 people stand amid sand dunes under a clear blue sky and near a metal framework equipped with scientific instruments.
Posted inScience Updates

The Nitty-Gritty Forces That Shape Planetary Surfaces

by Brian Jackson, Serina Diniega, Timothy Titus, Alejandro Soto and Edgard Rivera-Valentin 15 June 202315 June 2023

Scientists are coming up with ingenious ways to compare terrestrial sand dunes, dust storms, and rain with their counterparts on Mars and Titan.

An image of a dark brown sphere and its rings is backlit against a black background. The closer rings glow in yellow-orange and are haloed by the dusty ring system in blue-white. Several bright specks are visible.
Posted inNews

Saturn’s Shiny Rings May Be Pretty Young

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 9 June 20239 June 2023

The rings are fairly shiny despite being bombarded by dust, indicating that they haven’t been around for very long.

A close-up of a smooth gray semispherical body in space with a red spherical body in the background
Posted inNews

Tiny Martian Moon May Be a Chip Off the Old Block

Javier Barbuzano, Science Writer by Javier Barbuzano 2 June 20232 June 2023

A close approach to Deimos reveals that its surface does not look like that of an asteroid, hinting at a Martian origin.

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Features from AGU Publications

Research Spotlights

Webb Telescope Spies Io’s Volcanic Activity and Sulfurous Atmosphere

4 November 20254 November 2025
Editors' Highlights

Space Weather Monitoring from Commercial Satellite Mega-Constellations

4 November 20253 November 2025
Editors' Vox

Publishing Participatory Science: The Community Science Exchange

20 October 202517 October 2025
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