A NASA Discovery mission to conduct the first orbital study
of the innermost planet
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MESSENGER

Mission News

March 27, 2015
MESSENGER Completes 4,000th Orbit of Mercury
On March 25, the MESSENGER spacecraft completed its 4,000th orbit of Mercury, and the lowest point in its orbit continues to move closer to the planet than ever before. [more]

Mission Elapsed Time
August 3, 2004
DAYS HRS MINS SECS
Day Spot 1 Day Spot 2 Day Spot 3 Day Spot 4
Hour Spot 1 HourSpot2
Minute Spot 1 Minute Spot 2
Second Spot 1 Second Spot 2
Mercury Orbit Insertion
March 18, 2011
00:45 UTC
DAYS HRS MINS SECS
Day Spot 1a Day Spot 1 Day Spot 2 Day Spot 3
Hour Spot 1 HourSpot2
Minute Spot 1 Minute Spot 2
Second Spot 1 Second Spot 2
Countdown to Insertion Burn
Orbits Around Mercury
Orbits completed: 

Time until start of next orbit (hh:mm:ss): 
Orbit start is at maximum altitude.

Featured Images

March 30, 2015
Crumpled Crater
March 27, 2015
Anatomy of a Fresh Crater
March 25, 2015
Inside and Up Close
March 23, 2015
Highlights from Down Low
March 20, 2015
Small and Young