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0823.PR
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1993-04-23
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JET PROPULSION LABORATORY
CALIFORNIA INSTITUTE OF TECHNOLOGY
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
PASADENA, CALIFORNIA. TELEPHONE (213) 354-5011
FOR IMMEDIATE RELEASE: May 31,
1977
Viking's biology instruments have completed their
search
for life on Mars.
Controllers at Caltech's Jet Propulsion Laboratory
commanded
Viking Lander 2's biology instrument off May 28. The biology
instrument in Lander 1 was turned off May 30.
Viking Lander 1's biology instrument began
operations
July 28, 1976. Lander 2 began searching Martian soil samples
last
Sept. 11. Both have operated continuously since.
Both instruments worked to depletion of
high-pressure
helium, nutrients and other consumable. They performed all
experiments that the instrument was designed for, and several
that
hadn't been planned.
Both Viking landers continue to operate in a
satisfactory
manner; all experiments except biology and organic analysis
are
operating. (Experiments on Lander 2 have been reduced
because
of the winter cold, but the spacecraft is still operational.)
Both orbiters contiuue to operate normally. î
Biologists continue to study various combinations of
soil and other chemicals in laboratories across the United
States
in an attempt to duplicate results from the biology
instruments on
Mars.
Viking is operated for NASA's Office of Space
Science by
Langley Research Center, Hampton, Va. The mission is
controlled
from Jet Propulsion Laboratory. G. Calvin Broome is mission
director.
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