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planetary surfaces

Ligeia Mare
Posted inNews

Scientists Search for Deltas on Saturn’s Largest Moon

JoAnna Wendel, freelance science writer and illustrator by JoAnna Wendel 31 January 202019 September 2023

Saturn’s moon Titan has rivers that empty into seas…but where are the deltas?

Photos of a sensor on board the Curiosity rover before and after a dust storm
Posted inEditors' Highlights

Curiosity Monitors Rare Global Dust Storm From Mars’s Surface

by Anni Määttänen 12 August 201924 April 2024

Since the 1970s, no surface platform had made meteorological measurements of a global dust storm on Mars, but last summer NASA’s Curiosity rover witnessed one of these rare events.

Illustration of an erupting volcano on Venus
Posted inFeatures

Resurrecting Interest in a “Dead” Planet

Damond Benningfield, Science Writer by Damond Benningfield 11 July 201917 January 2023

New research suggests that the surface of Venus is busy, but it may take new missions to our “sibling” planet to confirm this.

Satellite image of the surface of Mars, with a 5-kilometer scale
Posted inResearch Spotlights

Detecting Carbonates on the Surface of Mars

by E. Underwood 16 May 201928 July 2022

A new study shows how a warm, wet climate weathered rocks on early Mars.

Radar map of Titan’s lake distric
Posted inNews

Titan’s Northern Lake District Has Hidden Depths

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 24 April 201910 March 2023

Radar and infrared data from flybys reveal new details about Titan’s northern lakes.

An artist’s rendering of what Mars may have looked like 4 billion years ago with an ocean covering about half of its surface
Posted inResearch Spotlights

A New Way to Analyze Evidence of Martian Oceans

Elizabeth Thompson by Elizabeth Thompson 9 April 201928 July 2022

Mars’s aqueous past holds the answers to many questions about the Red Planet. A new study provides a tool for scouring planetary surfaces for ancient shorelines.

Jezero Crater River Delta on Mars
Posted inNews

What Ancient Rivers on Mars Reveal About Its “Great Drying”

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 27 March 201923 February 2023

Dried-up rivers on Mars suggest that the planet was wet in the not-too-distant past.

Perspective view of Mars’s south polar ice cap
Posted inResearch Spotlights

Local Heat Source Needed to Form Liquid Water Lake on Mars

by Terri Cook 12 March 201910 March 2022

Thermal modeling suggests that active magmatism in the past few hundred thousand years could account for the presence of a large lake previously hypothesized beneath the Red Planet’s southern ice cap.

A picture of Phobos, the larger of Mars’s two moons
Posted inResearch Spotlights

New Hints About How Martian Moons Formed

by E. Underwood 11 February 201928 July 2022

A new study finds that Phobos includes chunks of Martian crust.

Slope streaks on Mars
Posted inEditors' Vox

Revisiting Enigmatic Martian Slope Streaks

by A. Bhardwaj, L. Sam, F. J. Martín‐Torres and M-P. Zorzano 15 January 201921 June 2023

Slope streaks of different sizes and shapes are a common feature on the surface of Mars, but scientists disagree about the mechanisms for their formation and development.

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A view of a bridge, with the New Orleans skyline visible in the distance between the bridge and the water. A purple tint, a teal curved line representing a river, and the text “#AGU25 coverage from Eos” overlie the photo.

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Hydrothermal Circulation and Its Impact on the Earth System

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