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hydrogen

Illustration of the Earth's internal structure.
Posted inEditors' Vox

Digging Deep into Interactions Between the Core and Mantle

by Takashi Nakagawa, Taku Tsuchiya, Madhusoodhan Satish-Kumar and George Helffrich 24 July 20234 August 2023

A new book presents major advances in our understanding of core-mantle interaction and co-evolution, and showcases technological developments improving our insights into deep Earth processes.

A satellite image of the surface of Mars showing snaking channels and other water-sculpted features
Posted inNews

Asteroid Impacts Could Have Warmed Ancient Mars

Katherine Kornei, Science Writer by Katherine Kornei 17 April 202317 April 2023

Hydrogen released during large impacts might have boosted Mars’s surface temperature above freezing for thousands or even millions of years, enabling liquid water to flow over the Red Planet.

Artist’s impression of a sub-Neptune or gas dwarf exoplanet
Posted inNews

Hydrogen May Push Some Exoplanets off a Cliff

by Julie Nováková 10 April 202310 April 2023

High-pressure reactions of hydrogen and iron could explain gaps in the distribution of exoplanets.

A long cylinder of ice on a table
Posted inNews

Ice Cores Record Long-Ago Seasons in Antarctica

by Caroline Hasler 17 March 202316 May 2023

Researchers used ice core data to reconstruct seasonal temperatures throughout the Holocene. The results link especially hot summers with patterns in Earth’s orbit.

Diagram showing the molecular hydrogen in Callisto’s atmosphere.
Posted inEditors' Highlights

Callisto’s H Corona: Offspring of the Surface or the Atmosphere?

by Beatriz Sanchez-Cano and Anni Määttänen 7 December 202219 January 2023

The mostly unknown Callisto’s H corona is created by a global tenuous H2 atmosphere and not by surface water as previously believed, providing the first evidence for H2 in Callisto’s atmosphere.

Researchers capture the first complete image of Earth’s geocorona
Posted inResearch Spotlights

Tracing the Path of Gas Atoms from Earth to the Final Frontier

by S. Witman 22 January 201817 January 2023

Scientists capture the first complete image of Earth’s luminous geocorona and prove its ecliptic north–south symmetry.

Posted inResearch Spotlights

Water Beneath the Surface of Mars, Bound Up in Sulfates

by S. Palus 14 April 20156 March 2023

Researchers present maps of hydrogen and sulfur that hint at water locked in hydrous sulfates in Mars's southern hemispheric soil.

Features from AGU Journals

RESEARCH SPOTLIGHTS
Geophysical Research Letters
“Neural Networks Map the Ebb and Flow of Tiny Ponds”
By Sarah Derouin

EDITORS' HIGHLIGHTS
Community Science
“Collaboration Helps Overcome Challenges in Air Quality Monitoring”
By Muki Haklay

EDITORS' VOX
Reviews of Geophysics
“What We Know and Don’t Know About Climate Tipping Elements”
By Seaver Wang

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