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Paris:
Astronomers say they have found a Jupiter-like body circling
a distant star in a planetary system like ours, an intriguing
discovery that raises the prospect of someday finding a
planet resembling Earth.
Hugh
Jones of Liverpool John Moores University said his team
had discovered the system, illuminated by a star dubbed
HD 70642, some 94 light-years from Earth. Jones was presenting
the finding at a conference at the Paris Astrophysics Institute
here Thursday.
The
star is similar to the sun in structure and brightness and
appears to be about the same age, Jones said. The planet
is traveling around the star in an orbital path similar
in shape and distance to the one that Jupiter follows around
our Sun.
Those
similarities have led the planet-hunters in Jones' team
of British, Australian and American scientists to conclude
that they have tumbled upon something exciting - the possibility
of finding another Earth in the Milky Way galaxy.
"We
are honing in on the search for planets like the Earth",
said Alan Penny of Rutherford Appleton Laboratory west of
London. Nearly 110 extrasolar planets - planets orbiting
stars other than the sun - have been found within the past
decade, but none really resembled our solar system until
now, Penny said.
"This
is the first one that is really like our own solar system
of the 110 that we've found," Penny said in a telephone
interview. "We think it's a substantial step on the way
to finding another Earth."
No
large planets have been found between the Jupiter like planet
and the star, leading scientists to conclude that an Earth-sized
planet could be nestled in between.
Courtesy:
The Times of India, July 04, 2003
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