A NASA Discovery mission to conduct the first orbital study
of the innermost planet
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January 30, 2008
Surprises Stream back from Mercury's MESSENGER

After a journey of more than 2.2 billion miles and three and a half years, NASA’s MESSENGER spacecraft made its first flyby of Mercury just after 2 PM Eastern Standard Time on January 14, 2008. All seven scientific instruments worked flawlessly, producing a stream of surprises that is amazing and delighting the science team. The 1,213 mages conclusively show that the planet is a lot less like the Moon than many previously thought, with features unique to this innermost world. The puzzling magnetosphere appears to be very different from what Mariner 10 discovered and first sampled almost 34 years ago. [more]

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Interview Videos
Edgar Rhodes

Listen to Instrument Scientist Edgar Rhodes discuss the importance of the measurements made by the Gamma-Ray and Neutron Spectrometer during the flyby in this interview video.

Videos Archive
Press Conferences

October 1, 2008
Preview of Mercury Flyby 2

January 30, 2008
Results from Mercury Flyby 1

January 10, 2008
Preview of Mercury Flyby 1

June 4, 2007
Preview of Venus Encounter


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The Johns Hopkins University
Applied Physics Laboratory
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D. Brown
NASA Headquarters
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T. McDowell
Carnegie Institution of Washington
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