UFO UpDates Mailing List
From: RSchatte@aol.com
Date: Fri, 13 Dec 1996 10:58:10 -0500
Fwd Date: Sat, 14 Dec 1996 12:22:45 -0500
Subject: Solar System Moon Studied
---------------------
Forwarded message:
From: AOLNewsProfiles@aol.net
Date: 96-12-13 08:18:36 EST
.c The Associated Press</I></PRE></HTML>
By JANE E. ALLEN
AP Science Writer
LOS ANGELES (AP) -- The solar system's largest moon has all the
characteristics of a planet, including a cocoon of magnetic
particles similar to the one enveloping Earth, scientists say.
The evidence of the planet-like characteristics of Jupiter's
huge moon Ganymede were revealed by audio recordings relayed to
Earth from the Galileo spacecraft, scientists said Thursday.
The soaring whistle and hissing static provide evidence that
Ganymede -- three-fourths the size of Mars -- has its own
planet-like, magnetic field called a magnetosphere.
Such a region of hot, ionized gases and highly charged particles
never before has been found around a moon.
Donald Gurnett, a University of Iowa physicist and Galileo
researcher, said the noise is consistent with magnetospheres he's
studied on Earth, Saturn and Jupiter.
He said the spacecraft's approach to Ganymede was quiet ``until
all of a sudden, there's a big burst of noise that signals the
entry into Ganymede's magnetosphere. Then for about 50 minutes we
detected the kinds of noises that are typical of a passage through
a magnetosphere.''
Ganymede, 3,269 miles across, has ridges, icy grooves and
craters that hint at an Earthlike crust that pulls apart and fills
in with flowing rock.
NASA is preparing for next Thursday's encounter with Jupiter's
moon Europa, suspected of hiding a frozen ocean and possibly life
beneath its fractured, icy crust. The unmanned Galileo spacecraft,
now making a two-year tour of Jupiter and its largest moons, will
come within 433 miles of Europa.
AP-NY-12-13-96 0812EST
Copyright 1996 The Associated Press. The information
contained in the AP news report may not be published,
broadcast, rewritten or otherwise distributed without
prior written authority of The Associated Press.</I></PRE></HTML>
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