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planetary surfaces

Big chamber where scientists were able to conduct the mud experiments
Posted inNews

Salt May Be Key to Martian Mudflows

by Larissa G. Capella 9 April 2025

Mars probably has mud volcanoes, and salt might be the ingredient that keeps the flow going.

Heavily cratered surface of the Moon with two linear valleys radiating from a large central crater
Posted inNews

Impact Spewed Debris Away from the Moon’s South Pole

by Jonathan O’Callaghan 1 April 20251 April 2025

Two valleys extending away from a giant crater suggest that upcoming Artemis missions are more likely to sample ancient lunar terrain than impactor material.

A reddish planet appears with a blue ocean covering most of its upper half
Posted inNews

Buried Sediments Point to an Ancient Ocean on Mars

Katherine Kornei, Science Writer by Katherine Kornei 26 March 202526 March 2025

Ground-penetrating radar data collected by the Zhurong rover reveal gently sloping sediments in Mars’s northern lowlands that hint at a shoreline.

Landslides in Hebes Chasma on Mars.
Posted inThe Landslide Blog

Landslides in Hebes Chasma, Mars

by Dave Petley 13 March 202513 March 2025

The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in the study and management of landslides. I rarely write about landslides on other planetary bodies, primarily because this is outside of my comfort zone. However, the European Space Agency (ESA) image below popped up on my feed this […]

Illustration of astronauts using rock hammers to collect samples on the Moon
Posted inNews

Human Activities Might Create Temporary Atmospheres on the Moon

by Jonathan O’Callaghan 11 December 202411 December 2024

Outgassing could pose problems for long-term habitation of the Moon, including health hazards for astronauts, hindrances for electronics, and hampered scientific study.

Side-by-side images of irregularly shaped gray/brown rocks in space.
Posted inNews

Pluto’s Small Moons Are Unlike Any Other

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 10 December 202410 December 2024

The strange blend of surface chemistry on Nix and Hydra raises big question about the evolution of the Pluto system.

An artist’s depiction of the LCROSS mission, in which a hexagonal spacecraft, seen from behind, ejects a white cylindrical body to land on the Moon’s south pole.
Posted inResearch Spotlights

Fifteen Years Later, Scientists Locate a Lunar Impact Site

by Nathaniel Scharping 9 October 202415 October 2024

The impact crater from NASA’s LCROSS mission lies hidden in an eternally dark region of the Moon.

月球表面的机器人着陆器
Posted inNews

嫦娥六号首次从月球背面采集样本并返回

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 1 October 20241 October 2024

这些样本可能为月球的形成和历史提供新的地质见解。

Large and small craters on the surface of Mars
Posted inNews

Parts of Mars Might Be Younger Than We Thought

by Jonathan O’Callaghan 10 September 202410 September 2024

Data from InSight’s seismometer suggest more impactors strike the Red Planet than expected.

A computer simulation on a repeat loop where the viewer approaches a circular pit on the Moon, descends vertically, and then levels out to see an underground cave.
Posted inNews

Lunar Lava Tube Revealed Beneath Collapsed Pit

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 2 August 20242 August 2024

The Sea of Tranquility is home to at least one lunar lava tube, which could preserve a pristine and unweathered record of lunar volcanism.

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Over a dark blue-green square appear the words Special Report: The State of the Science 1 Year On.

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A Road Map to Truly Sustainable Water Systems in Space

9 February 20269 February 2026
Editors' Highlights

Why Are Thunderstorms More Intense Over Land Than Ocean?

9 February 20269 February 2026
Editors' Vox

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

10 February 202610 February 2026
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