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Mercury

Posted inResearch Spotlights

MESSENGER Reveals a More Dynamic Mercury Surface

by Morgan Rehnberg 28 September 202225 January 2023

Image pairs indicate that 99% of the planet’s surface could be altered in the next 25 million years.

A computer simulation of solar wind entry layer and flux transfer events (green lines) in Mercury’s dayside magnetosphere
Posted inResearch Spotlights

Solar Wind a Major Driver of Atmospheric Sodium at Mercury

by Morgan Rehnberg 27 May 202227 July 2022

MESSENGER observations show a 50% rise in atmospheric sodium-group ions during periods of high solar wind activity.

Posted inEditors' Highlights

Plasma Density Distribution in Mercury’s Magnetosphere

by Y. Wang 27 February 20197 March 2022

A new measurement of plasma density distribution in Mercury’s magnetosphere obtained from observations of field line resonance events provides necessary constraint for many planetary science issues.

An enhanced-color image of Mercury
Posted inNews

Mercury Mission Will Map Morphology and Measure Magnetics

by Kimberly M. S. Cartier 18 October 201817 January 2023

BepiColombo may launch as early as this weekend. It seeks to unravel the mysteries of Mercury’s geologic and magnetic past and map the small planet’s cratered surface.

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

Comparing Craters

by A. Dombard 8 November 20178 November 2017

An analysis suggests that craters degrade faster on Mercury than the Moon, raising questions about landscape evolution on different planetary bodies.

New observations reveal secrets of sodium flares in Mercury’s exosphere
Posted inResearch Spotlights

Observing Mercury’s Brilliant Flares from Earth

by E. Underwood 9 August 20177 March 2022

Researchers make the first short-term observation of sodium flares in Mercury’s exosphere.

Impact craters on Mercury’s surface reveal how fast the planet’s topography is changing
Posted inResearch Spotlights

How Quickly Is Mercury’s Surface Evolving?

by Terri Cook 26 June 2017

New measurements of impact craters on Mercury’s smooth plains suggest that the topography of the solar system’s innermost planet is changing at twice the rate of landforms on the Moon.

Researchers think the depth of hollows on Mercury’s surface aren’t determined by the volatile-rich outer layer on the planet surface.
Posted inResearch Spotlights

Unprecedented Views of Mercury Constrain Hollow Formation

by Terri Cook 10 November 201625 August 2022

The consistently shallow depths of the depressions scattered across Mercury's surface suggest their morphology is not determined by the thickness of a volatile-rich outer layer.

Posted inResearch Spotlights

Demystifying Mercury "Hollows"

by Terri Cook 11 March 201628 July 2022

Spectral data from NASA's MESSENGER spacecraft indicate that the properties of the depressions on Mercury's surface can vary within a single crater and that these differences may correlate to age.

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Features from AGU Journals

RESEARCH SPOTLIGHTS
JGR: Solid Earth
“New Tectonic Plate Model Could Improve Earthquake Risk Assessment”
By Morgan Rehnberg

EDITORS' HIGHLIGHTS
AGU Advances
“Eminently Complex – Climate Science and the 2021 Nobel Prize”
By Ana Barros

EDITORS' VOX
Perspectives of Earth and Space Scientists
“New Directions for Perspectives of Earth and Space Scientists”
By Michael Wysession


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