Mercury TOP STORY

MESSENGER Finds Evidence of Ancient Magnetic Field on Mercury

© NASA/JHUAPL/CIW

Magentic fields on Mercury

About 4 billion years ago, Mercury's magnetic field could have been much stronger than today, as indicated by low-altitude observations made by NASA's MESSENGER spacecraft that revealed evidence of magnetization of ancient crustal rocks on Mercury.


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Mercury

MESSENGER Impact Region on Mercury

© NASA/CIW/JHUAPL

MESSENGER impact location

This region of Mercury's surface has a new crater!

Mercury

Mercury Crater-Naming Contest Winners Announced

Mercury Crater-Naming Contest Winners Announced

The MESSENGER Education and Public Outreach (EPO) Team, coordinated through the Carnegie Institution for Science, has announced the winners from its competition to name five impact craters on Mercury after artists.


Mercury

Unmasking the Secrets of Mercury

Unmasking the Secrets of Mercury

The Mercury Atmosphere and Surface Composition Spectrometer (MASCS) instrument aboard NASA's MESSENGER spacecraft was designed to study both the exosphere and surface of the planet Mercury.


Mercury

MESSENGER Achieves Unprecedented Success Studying Mercury

MESSENGER Achieves Unprecedented Success Studying Mercury

After extraordinary science findings and technological innovations, a NASA spacecraft launched in 2004 to study Mercury will impact the planet's surface, most likely on April 30, after it runs out of propellant.


Mercury

MESSENGER's Operations at Mercury Extended

MESSENGER's Operations at Mercury Extended

MESSENGER mission controllers conducted a maneuver yesterday to raise the spacecraft's minimum altitude sufficiently to extend orbital operations and further delay the probe's inevitable impact onto Mercury's surface.


Mercury

Comet Dust: Planet Mercury's Invisible Paint

Comet Dust: Planet Mercury's Invisible Paint

A team of scientists has a new explanation for the planet Mercury's dark, barely reflective surface.


Mercury

New Surface Composition Maps Illuminate Mercury's History

New Surface Composition Maps Illuminate Mercury's History

Two new papers from members of the MESSENGER Science Team provide global-scale maps of Mercury's surface chemistry that reveal previously unrecognized geochemical terranes large regions that have compositions distinct from their surroundings.


Mercury

Caloris Basin on Mercury As Seen From Orbit

Caloris Basin on Mercury As Seen From Orbit

This mosaic of Caloris basin is an enhanced-color composite overlain on a monochrome mosaic.


Mercury

Last Chance: Mercury Crater-Naming Contest Ends January 15

Last Chance: Mercury Crater-Naming Contest Ends January 15

The MESSENGER Education and Public Outreach (EPO) Team is reminding interested parties that the competition to name five impact craters on Mercury closes on January 15, 2015. The contest, open to everyone except members of the mission's EPO team, was launched on December 15, 2014.


Mercury

Extending MESSENGER's Mission at Mercury

Extending MESSENGER's Mission at Mercury

The MESSENGER spacecraft will soon run literally on fumes.


Mercury

MESSENGER Data Suggest Recurring Meteor Shower on Mercury

MESSENGER Data Suggest Recurring Meteor Shower on Mercury

The closest planet to the sun appears to get hit by a periodic meteor shower, possibly associated with a comet that produces multiple events annually on Earth.


Mercury

MESSENGER Provides First Optical Images of Ice Near Mercury's North Pole

MESSENGER Provides First Optical Images of Ice Near Mercury's North Pole

NASA's MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft has provided the first optical images of ice and other frozen volatile materials within permanently shadowed craters near Mercury's north pole.


Mercury

MESSENGER's View of Lunar Eclipse

MESSENGER's View of Lunar Eclipse Video in Story

As millions of people observed the total lunar eclipse on October 8, MESSENGER was also watching.


Mercury

Hokusai Crater on Mercury

Hokusai Crater on Mercury

This dramatic image features Hokusai in the foreground, famous for its extensive set of rays, some of which extend for over a thousand kilometers across Mercury's surface.


Mercury

Mercury's Magnetic Field Shows How its Interior is Different From Earth's

Mercury's Magnetic Field Shows How its Interior is Different From Earth's

Earth and Mercury are both rocky planets with iron cores, but Mercury's interior differs from Earth's in a way that explains why the planet has such a bizarre magnetic field, UCLA planetary physicists and colleagues report.


Mercury

MESSENGER Completes 3,000th Orbit of Mercury and Moves Lower

MESSENGER Completes 3,000th Orbit of Mercury and Moves Lower

On April 20, MESSENGER completed its 3,000th orbit of Mercury and moved closer to the planet than any spacecraft has been before, dropping to an altitude of 199 kilometers (123.7 miles) above the planet's surface.



More top stories from July.