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Journal of Geophysical Research: Planets

The ancient megafloods that carved canyons on Earth and Mars may have been smaller—but lasted longer—than previously thought.
Posted inResearch Spotlights

Reconstructing Catastrophic Floods on Earth and Mars

by Sarah Stanley 26 July 201623 February 2023

A new theoretical model suggests that ancient floods that carved canyons on Earth and Mars may have been much smaller but lasted longer than previously thought.

An enhanced-color view from NASA’s Mars Reconnaissance Orbiter High Resolution Imaging Science Experiment(HiRISE) shows rugged, canyon walls surfaces where Recurring Slope Lineae (RSL) are frequently detected in Coprates Chasma, Valles Marineris
Posted inResearch Spotlights

A Cluster of Water Seeps on Mars?

by Terri Cook 25 July 201628 July 2022

The discovery of dense concentrations of recurring flowlike features in two Valles Marineris chasms could aid in the search for life and influence future exploration of the Red Planet.

Carbon dioxide frost presence at sunrise on Mars integrated over 1 year; note CO2 frost at low latitudes.
Posted inResearch Spotlights

Carbon Dioxide Frost May Keep Martian Soil Dusty

by David Shultz 8 July 201612 October 2022

Temperature readings acquired from orbit show that Mars's surface gets cold enough at night to allow layers of solid carbon dioxide frost up to several hundred micrometers thick to build up near the equator.

Portion of a photo taken by NASA's Curiosity rover while traversing the Kimberly formation on its journey south toward the center of Gale Crater.
Posted inResearch Spotlights

Curiosity Sends Curious Water Data from Mars

by Sarah Stanley 8 June 20163 January 2023

The rover's neutron spectroscopy instrument hints at an unexpected trend: The upper soil levels in the layers of Gale Crater's Kimberley formation seem to hold more water-associated hydrogen.

Unnamed crater in eastern Hesperia Planum, Mars.
Posted inResearch Spotlights

Martian Carbonates Spotted by the Orbiter

by Kate Wheeling 3 May 201628 July 2022

The minerals identified by the Mars Reconnaissance Orbiter provide more evidence that the planet may have once been habitable.

Posted inResearch Spotlights

Satellites Reveal the History of the Moon's "Frigid Sea"

by Terri Cook 25 January 201628 July 2022

The history of aluminum-rich basalts in Mare Frigoris may help scientists better understand the evolution of the lunar mantle.

Posted inResearch Spotlights

Curiosity Rover Finds Organic Molecules on Martian Surface

by David Shultz 12 October 20153 January 2023

Scientists assess the present and past habitability of Mars from organic compounds detected at Gale Crater.

Posted inResearch Spotlights

What Formed These Curious Ripples on Mars?

by C. Minnehan 18 September 20156 March 2023

Dunes, ridges, or something else? Scientists seek to understand the origins of transverse aeolian ridges.

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Features from AGU Journals

RESEARCH SPOTLIGHTS
Earth’s Future
“How to Build a Climate-Resilient Water Supply”
By Rachel Fritts

EDITORS' HIGHLIGHTS
AGU Advances
“How Do Atmospheric Rivers Respond to Extratropical Variability?”
By Sarah Kang

EDITORS' VOX
Reviews of Geophysics
“Rare and Revealing: Radiocarbon in Service of Paleoceanography”
By Luke C. Skinner and Edouard Bard

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