From NASA's Planetary Photojournal
The Mars Global Surveyor Mars Orbiter Camera (MOC) wide angle system is used to monitor changes in martian weather and the seasonal coming and going of polar frost. This is an example of frost monitoring conducted by the MOC in recent months. It is spring in the northern hemisphere, and frost that accumulated during the most recent 6-month-long winter has been retreating since May. It is autumn in the southern hemisphere, and frost was seen as early as August in some craters; later the frost line moved farther north, and we began to see frost in Lowell Crater in mid-October.
Title ; The Frosted Craters of Northern Spring and Southern Autumn - Lowell Crater
Catalog #: PIA02836
Target Name: Mars
Spacecraft: Mars Global Surveyor Orbiter
Back to Mars index.
Back to index.
Last Modified On: Tuesday, December 19, 2000