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Mars

Orbiter view of Acidalia Planitia
Posted inNews

How Scientists Search for Martian Methane

JoAnna Wendel, freelance science writer and illustrator by JoAnna Wendel 28 January 20202 November 2021

Finding subsurface reserves of methane on Mars could revolutionize human space travel, but it won’t be an easy hunt.

A crust fracture and craters on Mars
Posted inFeatures

A Modern Manual for Marsquake Monitoring

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 11 December 201922 June 2022

Thanks to some extraordinary engineering, the InSight mission has led the new field of Martian seismology to the development of a new planetary magnitude scale in less than a year.

Schematic of how chlorate could oxidize reducing iron to iron oxides in various aqueous environments on Mars
Posted inEditors' Highlights

Why Is the Red Planet Red? Chlorate May Oxidize Mars’ Surface

by Yasuhito Sekine 6 December 201922 December 2021

Laboratory experiments and geochemical model suggest that chlorate is very effective to oxidize reducing iron to reddish iron oxides on Mars when liquid water was present on the surface.

The Curiosity rover sits on the surface of Mars on 12 May 2019.
Posted inResearch Spotlights

Curiosity Rover Reveals Oxygen Mystery in Martian Atmosphere

Sarah Stanley, Science Writer by Sarah Stanley 25 November 201924 April 2024

An air-sampling study has captured long-term trends in the concentrations of five key atmospheric gases for the first time.

NASA’s Mars Atmosphere and Volatile Evolution spacecraft orbits Mars and samples electrons behind the Martian bow shock in this artist’s rendition.
Posted inResearch Spotlights

Explaining the Missing Energy in Mars’s Electrons

by Mark Zastrow 11 November 201910 March 2022

Electrons energized and trapped at Mars were thought to lose energy inside the planet’s magnetosheath, but new research suggests a different explanation of spacecraft data.

Colorful satellite image of the location where a submarine canyon’s deep waters meet the Grand Bahama Bank
Posted inNews

How Do Submarine and Terrestrial Canyons Compare?

Rachel Crowell, Science Writer by Rachel Crowell 6 November 201929 June 2022

Insights from a new study could spark discoveries about Martian landscapes and also help researchers get to the bottom of canyon formation here on Earth.

A field of penitentes
Posted inNews

Microbes Spotted on Blades of Ice High in the Andes

Katherine Kornei, Science Writer by Katherine Kornei 15 August 201912 April 2022

Researchers discover microbial life on ice spires known as penitentes on the arid, sunlight-blasted upper reaches of Llullaillaco, one of the best earthly analogues for Mars.

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.

Four stages of development of the Lomonosov crater on Mars
Posted inEditors' Highlights

Lomonosov: The Crater That Started a Martian Mega Tsunami

by Laurent G. J. Montési 31 July 201923 February 2023

Three billion years ago, on Mars, the shores of an ocean may have been flooded by a mega-tsunami. Now the crater left by the bolide impact that probably triggered the tsunami has been identified.

Map and images of South Polar Layered Deposits on Mars
Posted inEditors' Highlights

Peeling Back the Layers of the Climate of Mars

by A. Dombard 18 July 20198 August 2022

A new study ties layers in the polar deposits of Mars to changes in climate driven by orbital variations, constraining accumulation rates and further deciphering the climate history of the Red Planet.

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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.

Features from AGU Publications

Research Spotlights

Denitrification Looks Different in Rivers Versus Streams

16 January 202616 January 2026
Editors' Highlights

Kyanite Exsolution Reveals Ultra-Deep Subduction of Continents

23 January 202622 January 2026
Editors' Vox

Bridging the Gap: Transforming Reliable Climate Data into Climate Policy

16 January 202616 January 2026
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