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lava & magma

An image of the surface of Mercury shows a yellow surface and three craters ringed with dark blue. The middle crater has light blue spots in the center, and the other two are dotted with light blue around the edges.
Posted inNews

A Unique African Volcano Could Solve a Mystery on Mercury

by Matthew R. Francis 2 June 20262 June 2026

New data from Ol Doinyo Lengai in Tanzania suggest that carbon-rich volcanic activity could be responsible for the mysterious “hollows” observed on the surface of Mercury.

A snow-capped mountain is seen across a lake. The mountain is framed by vibrant red and yellow autumn leaves in the foreground.
Posted inNews

Heavy Rainfall Inflates Mount Fuji

Katherine Kornei, Science Writer by Katherine Kornei 26 May 202626 May 2026

The uplift, several centimeters in magnitude, is likely caused by water pooling in the mountain’s shallow aquifers. The effect is shorter lived than deformation caused by magmatic activity.

Italy’s Larderello region
Posted inNews

Scientists Find Thousands of Cubic Kilometers of Magma Hiding Beneath Tuscany

by Nathaniel Scharping 18 May 202618 May 2026

We already know what’s Under the Tuscan Sun. Now, a technique called ambient noise tomography has allowed researchers to see deep under the Tuscan crust.

The gentle green slopes of a mountain range with a small field camp nestled at the base.
Posted inNews

Mongolian Mountains Rose When the Crust Bounced Back

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 15 May 202618 May 2026

A plate folded, the lithosphere sank, and up popped a mountain range.

Three scientists working on the side of a mountain.
Posted inEditors' Vox

Hydrothermal Heat Flow as a Window into Subsurface Arc Magmas

by Benjamin A. Black, S. E. Ingebritsen and Kazuki Sawayama 28 April 20261 May 2026

What can warm fluids in arc crust tell us about how much magma is lurking underground? Hydrothermal heat fluxes provide constraints on the supply of magma from the mantle in subduction zones.

A mountain of gray rock rises above clouds, and a gondola is descending toward the mountain.
Posted inNews

Volcanism Could Lead to Less, Not More, Atmospheric CO₂

Katherine Kornei, Science Writer by Katherine Kornei 23 March 202623 March 2026

The atmospheric concentration of carbon dioxide temporarily fell by 50% immediately preceding a period of intense volcanism, likely because of increased weathering, new results reveal.

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.

A rocky structure on the seafloor has what appears to be black smoke coming out of it.
Posted inNews

A Mid-Ocean Ridge in the Norwegian Sea Pumps Out Hydrogen

Katherine Kornei, Science Writer by Katherine Kornei 3 February 20263 February 2026

Vent fluids collected from the Knipovich Ridge contain unexpectedly high concentrations of hydrogen, potentially produced by the degradation of organic matter.

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 20261 June 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.

Part of a hazy orange planet appears against a dark background.
Posted inNews

A “Lava World” Unexpectedly Hosts an Atmosphere

Katherine Kornei, Science Writer by Katherine Kornei 7 January 20267 January 2026

TOI-561 b, an exoplanet roughly 275 light-years away, seems to have a thick atmosphere despite being wildly irradiated by its host star.

Posts pagination

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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

Rivers in the Antarctic Sky, Captured in 3D

2 June 20262 June 2026
Editors' Highlights

Pre-Existing Structure and Stress Shape Geothermal-Induced Seismicity

2 June 20261 June 2026
Editors' Vox

The Editorial Board Marks the Latest Chapter in AGU Books

1 June 202626 May 2026
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