Mars Global Surveyor (MGS) has now been orbiting Mars for 9 years! It was the evening of 11 September 1997, Pacific Daylight time, but it was early in the morning on 12 September 1997, Greenwich Mean Time, when MGS fired its engines to slow down and drop into an elliptical orbit around Mars. The Mars Orbiter Camera (MOC) began acquiring its first images just a few days later.
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