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

Mission News

April 21, 2014
MESSENGER Completes Its 3,000th Orbit of Mercury, Sets Mark for Closest Approach
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]

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

April 23, 2014
Wonder at Waters
April 21, 2014
A Puzzling Peak
April 18, 2014
Peak to Pit
April 16, 2014
Ring of Ridges
April 14, 2014
A Frozen Sea