384 -- First on Mars.
In this visualization, a robotic supply ship has been
set down on Mars prior to the human landing (background). Once it is
known to be on the surface in working order, astronauts land in a second
vehicle (right). The Mars landscape in this view was sketched from
volcanic and sand-dune terrain in the Pinacate lava fields of Sonora,
Mexico.
(Copyright William K. Hartmann).
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209 -- First in the Dunes of Mars.
Mars Global Surveyor has increased the sense from earlier missions that dust drifts and dunes are important land forms, and that much of Mars is blanketed by deposits of dust. This was painted at Death Valley National Monument, California.
(Copyright William K. Hartmann).
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104 -- Exploring Mars.
Stratified outcrops, such as shown here, will be a
target of interest in order to assess soils of different ages that might
allow us to reconstruct ancient Martian environmental conditions.
(Copyright William K. Hartmann).
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211 -- Drilling station in the Martian polar terrain.
The stratified
deposits at both Martian poles are an interesting target for exploration.
The strata appear to have been built up over many cycles of climatic
variation, possibly associated with cycles of change in Mars' axial tilt.
Also, this terrain may mark areas where frozen H2O ice melted during some
climate cycles. Ancient sediments might be especially important in
revealing early condition that could have fostered microbial life on Mars.
Drilling stations might be one way to obtain good records of the
stratigraphy.
(Copyright William K. Hartmann).
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