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planetary surfaces

Schematic of the mechanical design of the Heatflow and Physical Properties Package radiometer
Posted inEditors' Highlights

Insights from Calibration of the HP³ Radiometer on InSight

by Kristy Tiampo 27 July 202022 June 2022

A detailed analysis of Heatflow and Physical Properties Package Radiometer on the Mars InSight lander, including changing instrument sensitivity and calibration coefficients.

Black-and-white image of the Martian landscape feature Medusae Fossae
Posted inNews

Scientists Float a New Theory on the Medusae Fossae Formation

Nola Taylor Redd, Science Writer by Nola Taylor Tillman 19 May 202025 August 2022

Pumice-like rafts of lightweight material could have carried volcanic debris across an ancient Martian ocean to build one of the most puzzling features on the Red Planet.

The track of a boulder that tumbled into one of the Moon’s permanently shadowed regions
Posted inNews

Shedding Light on the Darkest Regions of the Moon

by C. Fogerty 21 February 202021 February 2023

An international team of researchers is analyzing boulder tracks to learn more about some of the most elusive regions on the Moon.

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.

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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

New Method Could Improve U.S. Forecasting of West Nile Virus

20 February 202620 February 2026
Editors' Highlights

Why More Rain Doesn’t Mean More Erosion in Mountains

20 February 202620 February 2026
Editors' Vox

A Double-Edged Sword: The Global Oxychlorine Cycle on Mars

10 February 202610 February 2026
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