Astronomers say they have found the first Earth-sized world circling its mother star at a distance suitable for life.
It also has good prospects for liquid surface water, believed to be a key ingredient for life.
"This planet will most probably be a very important target of the future space missions dedicated to the search for extraterrestrial life," says Dr Xavier Delfosse, with the
Grenoble Astrophysical Laboratory in France.
It will be years before more sensitive instruments are developed to glean additional clues about whether life exists on the planet.
The rocky planet, which may be habitable, is one of three planets surrounding the red dwarf Gliese 581 (Image: ESO)
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http://www.abc.net.au/science/news/stories/2007/1906138.htmMike Shedlock / Mish
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