• About
  • Special Reports
  • Topics
    • Climate
    • Earth Science
    • Oceans
    • Space & Planets
    • Health & Ecosystems
    • Culture & Policy
    • Education & Careers
    • Opinions
  • Projects
    • Postcards From the Field
    • ENGAGE
    • Editors’ Highlights
    • Editors’ Vox
    • Eos en Español
    • Eos 简体中文版
    • Print Archive: 2015–2025
  • Policy Tracker
  • Blogs
    • Research & Developments
    • The Landslide Blog
  • Newsletter
  • Submit to Eos
  • AGU.org
  • Career Center
  • Join AGU
  • Give to AGU
  • About
  • Special Reports
  • Topics
    • Climate
    • Earth Science
    • Oceans
    • Space & Planets
    • Health & Ecosystems
    • Culture & Policy
    • Education & Careers
    • Opinions
  • Projects
    • Postcards From the Field
    • ENGAGE
    • Editors’ Highlights
    • Editors’ Vox
    • Eos en Español
    • Eos 简体中文版
    • Print Archive: 2015–2025
  • Policy Tracker
  • Blogs
    • Research & Developments
    • The Landslide Blog
  • Newsletter
  • Submit to Eos
Skip to content
  • AGU.org
  • Career Center
  • Join AGU
  • Give to AGU
Eos

Eos

Science News by AGU

Support Eos
Sign Up for Newsletter
  • About
  • Special Reports
  • Topics
    • Climate
    • Earth Science
    • Oceans
    • Space & Planets
    • Health & Ecosystems
    • Culture & Policy
    • Education & Careers
    • Opinions
  • Projects
    • Postcards From the Field
    • ENGAGE
    • Editors’ Highlights
    • Editors’ Vox
    • Eos en Español
    • Eos 简体中文版
    • Print Archive: 2015–2025
  • Policy Tracker
  • Blogs
    • Research & Developments
    • The Landslide Blog
  • Newsletter
  • Submit to Eos

planetary surfaces

A satellite image shows dark sand deposits near the south pole of Mars. The shape formed by the deposits is reminiscent of an angel with outstretched wings with a large heart under its right wing.
Posted inResearch Spotlights

Maybe That’s Not Liquid Water on Mars After All

by Rebecca Owen 21 November 202521 November 2025

A “very large roll” of a radar instrument offers new insight into a highly reflective area near the Martian south pole.

A grayscale image of a ridged and cratered moon with only the left hemisphere illuminated.
Posted inNews

Tiny Uranian Moon Likely Had a Massive Subsurface Ocean

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 24 October 202524 October 2025

Ariel’s tempestuous subsurface ocean may have once composed more than half its total volume.

A photo of a gray surface pockmarked with craters, as well as a line representing a fault.
Posted inResearch Spotlights

How Much Has Mercury Shrunk?

Sarah Stanley, Science Writer by Sarah Stanley 13 August 202513 August 2025

Mercury is still shrinking as it cools in the aftermath of its formation; new research narrows down estimates of just how much it has contracted.

A person wearing sunglasses uses a remote control to drive a chest-height, six-wheeled rover on dirt.
Posted inFeatures

Tanya Harrison: Roving on Mars

by Matthew R. Francis 28 July 202528 July 2025

This planetary geologist has worked on nearly every Mars rover while connecting government, universities, the private sector, and the public.

A scientist stands behind a camera on a tripod in front of a short patch of wavy sand in an orange desert.
Posted inNews

Mini Dunes Form When Sand Stops Bouncing

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 11 June 20259 June 2025

Decoding how sand grains move and accumulate on Earth can also help scientists understand dune formation on Mars.

A view from above of a set of interlocking ridges running through a landscape.
Posted inNews

Cracks on Planetary Surfaces Hint at Water

Katherine Kornei, Science Writer by Katherine Kornei 17 April 202517 April 2025

Imagery of fractured terrain on Venus, Mars, and Jupiter’s moon Europa pinpoints environments influenced by water.

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 […]

Posts pagination

Newer posts 1 2 3 4 … 11 Older posts
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

In Alaska, Wildfires Help Prevent Future Burns. Will That Feedback Loop Hold?

24 September 202625 September 2026
Editors' Highlights

“Young Get Older, but Old Get Younger”: Counterintuitive Ocean Waters

25 September 202625 September 2026
Editors' Vox

In Appreciation of AGU’s Outstanding Reviewers of 2025

14 September 202610 September 2026
Eos logo at left; AGU logo at right

About Eos
ENGAGE
Awards
Contact

Advertise
Submit
Career Center
Sitemap

© 2026 American Geophysical Union. All rights reserved Powered by Newspack