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Posted by United Press International on February 24, 2010, 4:05 pm
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TYPE>story</CLARI-ITEM> <B><CLARI-ITEM SLUGWORD>US-NASA-PHOENIX</CLARI-ITEM></B>
<H1><CLARI-ITEM HEADLINE>Still no signal from Phoenix Mars
<I><B><CLARI-ITEM COPYRIGHT>Copyright 2010 by United Press International (via
ClariNet)</CLARI-ITEM></B></I> / <I><CLARI-ITEM DATE>Wed, 24 Feb 2010 16:05:00
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<P> PASADENA, Calif., Feb. 24 (UPI) -- NASA scientists say they
have started a second effort to determine if the Phoenix Mars Lander
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is still operational after the long martian winter.</P>
<P> The space agency said its Mars Odyssey Orbiter has, so far,
failed to receive any signal from the lander during its first 10
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overflights.</P>
<P> Odyssey will continue to listen for Phoenix through Friday,
scientists said.</P>
<P> "Phoenix landed on Mars on May 25, 2008, and operated
successfully in the martian arctic for about two months longer than
its planned three-month mission," NASA said in a statement.
"Operations ended when waning sunlight left the solar-powered craft
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with insufficient energy to keep working."</P>
<P> Scientists at NASA's Jet Propulsion Laboratory in Pasadena,
Calif., said Phoenix was not designed to withstand the extremely low
temperatures and the ice load of the martian arctic winter. But, in
the extremely unlikely event the lander has survived the winter and
has achieved a stable energy state, it would operate in a mode in
which it periodically awakens and transmits a signal to any orbiter
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in view.</P>
<P> Officials said it is now mid-spring at the Phoenix landing
site, with the sun above the horizon for roughly 22 hours each
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martian day.</P>
<P> A third effort to check whether Phoenix has revived itself
is scheduled for April 5-9, when the sun will be continuously above
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the martian horizon at the Phoenix site.</P>
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