NASA selects Mars' South Pole area for probe landing site
WASHINGTON (AP) -- NASA scientists have selected a gently rolling<br>plain near Mars' South Pole as the touchdown target for a robot<br>spacecraft next December.<br> <br>"We chose a location with
Wednesday, August 25th 1999, 12:00 am
By: News On 6
WASHINGTON (AP) -- NASA scientists have selected a gently rolling plain near Mars' South Pole as the touchdown target for a robot spacecraft next December.
"We chose a location with some surface features, but no cliffs or jagged peaks," said Richard Zurek, the project chief at the Jet Propulsion Laboratory in Pasadena, Calif.
Zurek said the Mars Polar Lander site appears to have layers of dust and ice of varying thickness that could contain a record of climate changes.
"In a sense, digging into its surface will be like reading tree rings or layers in an ice core," Zurek said in a statement. "In addition, we may find evidence of soil particles that formed in ancient seas on Mars and were later blown into the polar region."
The landing will be centered in a target zone 124 miles long and 12.4 miles wide. It is 76 degrees south latitude and 195 degrees west longitude, near the Martian South Pole.
Scientists selected the site after studying pictures and other data from the Mars Global Surveyor, a craft currently orbiting Mars.
The Mars Polar Lander is scheduled to touch down Dec. 3, near the end of the spring season in the Martian southern hemisphere. During this time, the target area will be in constant sunlight, an important factor given that the spacecraft gets its power from solar panels.
Mars Polar Lander was launched Jan. 3. The lander has equipment to study the soil and to look for ice beneath the surface. Just before the craft enters the Martian atmosphere, it will release two penetrating probes that will punch beneath the soil surface to look for water ice near the landing site.
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