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Messenger to Mercury

NASA’s Messenger spacecraft entered orbit around Mercury in 2011 for a one-year mission to this least-explored of the solar system’s inner planets. It flew by Mercury three times before settling into orbit, with each encounter reducing its speed. Messenger will map the planet’s entire surface, measure the chemical and mineral composition of its rocks and soil, measuring its gravitational and magnetic fields, and conduct other observations.


Mercury March 7, 2006

Radio Programs

Venus and Mercury Changing the surface of a planet December 27, 2022

Evening Mercury Questions for a future explorer May 9, 2021

Morning Mercury A bowling ball in the dawn sky August 8, 2019

Messier 37 Taking the age of a star cluster December 16, 2018

Featured Images

Composite image showing sites of possible ice deposits on Mercury

Icy Darkness November 24, 2019

Colorful Caloris April 15, 2016

View of Mercury from Messenger spacecraft

Dark Planet October 10, 2015

The Messenger spacecraft's final image of the surface of Mercury

The End April 30, 2015