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Posted by United Press International on December 12, 2005, 7:10 pm
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<I><A HREF='http://www.yellowbrix.com/ '>YellowBrix</A> <CLARI-ITEM
TYPE>story</CLARI-ITEM> <B><CLARI-ITEM SLUGWORD>US-MARS</CLARI-ITEM></B> from
<I><B><CLARI-ITEM COPYRIGHT>Copyright 2005 by United Press International (via
ClariNet)</CLARI-ITEM></B></I> / <I><CLARI-ITEM DATE>Mon, 12 Dec 2005 19:10:15
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<P> BERKELEY, Calif., Dec. 12 (UPI) -- University of
California-Berkeley physicists say auroras similar to Earth's
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Northern Lights are apparently commonplace on Mars.</P>
<P> The scientists, who analyzed six years' worth of data from
the Mars Global Surveyor, said the discovery of hundreds of auroras
occurring during the past six years was a surprise, since Mars
doesn't have the global magnetic field that on Earth produces the
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aurora borealis and the antipodal aurora australis.</P>
<P> The physicists said the auroras on Mars aren't due to a
planet-wide magnetic field, but instead, to patches of strong
magnetic field in the planet's crust, mostly in southern areas. And
they probably aren't as colorful as those on Earth, the researchers
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say.</P>
<P> "The fact that we see auroras as often as we do is amazing,"
said UC Berkeley physicist David Brain, the lead author of a paper
on the discovery. "The discovery of auroras on Mars teaches us
something about how and why they happen elsewhere in the solar
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system, including on Jupiter, Saturn, Uranus and Neptune."</P>
<P> The study was recently accepted by the journal Geophysical
Research Letters.</P>
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