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Journal of Geophysical Research: Planets

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Researchers find evidence of regional deposition in Mars’s south polar deposits
Posted inResearch Spotlights

Evidence of Regional Deposition in Mars’s South Polar Deposits

by Terri Cook 13 August 20188 August 2022

Shallow Radar correlation of discrete units in one of the Red Planet’s largest ice reservoirs suggests that its material was emplaced as a single, regional deposit.

Researchers analyze rocks from Mars’s Gale crater to see whether the conditions under which they formed were really as Earthlike as previously believed.
Posted inResearch Spotlights

Is Mars Not So Earthlike After All?

by E. Underwood 16 July 20183 January 2023

Light-colored Gale crater rocks could have formed from intraplate volcanoes, not continental crust, new study finds.

Researchers analyze traces of volcanic activity and water flooding in Hrad Vallis on Mars
Posted inResearch Spotlights

Tracing the Steps of Hydrothermal Activity in Hrad Vallis, Mars

by S. Witman 10 July 201810 October 2021

Conditions that formed Amazonian age valleys may have been hospitable to microbial life.

Recently restored data suggest that astronaut disturbances to the lunar surface resulted in observed subsurface warming.
Posted inResearch Spotlights

The Case of the Missing Lunar Heat Flow Data Is Finally Solved

Sarah Stanley, Science Writer by Sarah Stanley 25 June 201810 March 2022

Decades-old data analyzed for the first time suggest that astronauts’ disturbance of the Moon surface increased solar heat intake, warming the ground below.

Researchers peer through Titan’s atmosphere to understand its surface geology
Posted inResearch Spotlights

Peering Through Titan’s Haze to Better Understand Its Surface

by Terri Cook 5 June 201825 August 2022

Variations in grain size and water ice content detected on Saturn’s largest moon offer evidence of geologically related units that resemble the mountain-to-desert transition on Earth.

Posted inEditors' Highlights

How Did Venus Get its Youthful Surface?

by Steven A. Hauck, II 17 May 201816 November 2021

Catastrophic lithospheric recycling is unlikely to be the cause of Venus’s young surface from mantle convection models constrained by offset between the center of mass and center of shape of planet.

A new model based on decades of experimental results simulates ice dissociation on celestial bodies
Posted inResearch Spotlights

A Consistent Model of Ice Dissociation on Celestial Bodies

by Terri Cook 14 May 201826 January 2022

A model based on decades of experimental results can now quantify the products of water ice dissociation caused by radiation and predict the products expelled into an icy body’s outer atmosphere.

Mercury’s south pole to 80°S, with an Arecibo radar image in pink indicating locations of water ice.
Posted inResearch Spotlights

Evidence of Extensive Ice Deposits Near Mercury’s South Pole

by Terri Cook 20 April 201810 January 2023

New radar observations and refined illumination maps reveal uneven water ice deposits twice the size of those found around the planet’s north pole, suggesting the source may be a recent comet impact.

Posted inEditors' Highlights

Elevated Heat Flow at Coronae on Venus

by Steven A. Hauck, II 26 February 201811 January 2022

Enigmatic surface features on Venus called coronae are important for how Venus loses heat, and measurement of surface flexing around these features indicates higher heat flows than on Earth.

Mare Crisium, a large impact large basin on Earth’s Moon.
Posted inResearch Spotlights

Moon’s Magnetic Field May Magnetize Iron That Hits Its Surface

by S. Witman 23 February 201820 December 2021

Scientists are using satellite data to study large impact basins on the surface of the Moon that contain magnetic anomalies.

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