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planetary surfaces

An artist’s depiction shows a cross section of a lava tube on Venus, with a ray of radar light shining into it from above. Earth is visible in the far distance.
Posted inNews

New Evidence Points to Venusian Lava Tubes, and They’re Really Big

by Emily Gardner 6 March 20266 March 2026

Researchers bring new life to 30-year-old Magellan data to unearth the first direct evidence of the long-hypothesized structures.

Roughly a quarter of a crater rim with blue-white streaks pointed inward.
Posted inNews

Oozing Gas Could Be Making Stripes in Mercury’s Craters

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 12 February 202612 February 2026

Scientists are using new computational tools to analyze troves of old spacecraft data to better understand one of Mercury’s unsolved mysteries.

Scientists wearing bright yellow safety vests stand in various places amid an expanse of dark volcanic rock with barren hills in the background.
Posted inFeatures

Discovering Venus on Iceland

by Debra L. Buczkowski, Jennifer L. Whitten, Scott Hensley, Daniel C. Nunes and Marc Jaeger 23 January 202623 January 2026

Scientists trekked across Icelandic lava flows that served as stand-ins for Venus’s volcanic landscapes, testing tools and methods the upcoming VERITAS mission will use when it reaches the planet.

Two people in shadow explore a dark ice cave with ice stalactites and columnar-appearing sides. Light from the entrance backlights the scene.
Posted inNews

Could Future Mars Habitats Be Made of Ice?

by Olivia Maule 15 December 202515 December 2025

Models suggest that clear ice, sourced and distilled on Mars, could offer a feasible alternative for building stable off-world structures.

Image taken by Mars Curiosity Rover of the Martian surface showing its parallel wheel tracks (center, spaced 9 feet apart) in red Martian regolith. In the center of the image, the regolith appears to be fine grained. On both sides, slopes are studded with boulders and cobbles of varying shades of red and gray black. The regolith in the foreground is scattered with many angular red or gray cobbles. The gray Martian sky forms the backdrop with red hills in the distance.
Posted inNews

Fungi, Fertilizer, and Feces Could Help Astronauts Grow Plants on the Moon

by Alka Tripathy-Lang 1 December 20251 December 2025

A new study offers tantalizing evidence that filamentous fungi extending from roots, along with treated astronaut waste, could provide sufficient scaffolding to help plants grow in planetary regolith.

Uranus and its moons and rings glow blue, white, and teal in this infrared image. Uranus is seen nearly face-on, and moons are visible both within and outside of the ring system.
Posted inNews

Uranus’s Small Moons Are Dark, Red, and Water-Poor

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 25 November 202526 November 2025

…Except for Mab, which is even weirder than expected.

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.

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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

A Long-Term Look Beneath an Antarctic Ice Shelf

6 March 20269 March 2026
Editors' Highlights

Collinearity is Not Always a Problem in Machine Learning

10 March 20269 March 2026
Editors' Vox

How Radar Reveals the Hidden Fabric of Ice Sheets

9 March 20269 March 2026
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