- Press Release
- Dec 4, 2022
NASA Mars Odyssey THEMIS Image: South Polar Cap 03-08-2004
Context image credit: NASA/Mars Orbiter Laser Altimeter (MOLA) Team
[ Find on map: CGI version ]
The Odyssey spacecraft has completed a full Mars year of observations
of the red planet. For the next several weeks the Image of the Day
will look back over this first mars year. It will focus on four
themes: 1) the poles – with the seasonal changes seen in the retreat
and expansion of the caps; 2) craters – with a variety of morphologies
relating to impact materials and later alteration, both infilling
and exhumation; 3) channels – the clues to liquid surface flow; and
4) volcanic flow features. While some images have helped answer
questions about the history of Mars, many have raised new questions
that are still being investigated as Odyssey continues collecting
data as it orbits Mars.
This image was collected March 5, 2002 during the southern summer season.
Layering in the South polar cap interior is readily visible
and may indicate yearly ice/dust deposition.
[Source: ASU THEMIS Science Team]
Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time.
Image Credit: NASA/JPL/Arizona State University
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