posted on Apr, 25 2007 @ 05:06 PM
Here you find some more info on Red dwarfs stars theory published in 2001.
If you want to find extraterrestrial intelligence, you're going to have to look in the right place. In our Galaxy alone there are more than 100
billion stars, so you might expect to find a profusion of alien abodes. But which suns do you point your telescope at? Bright, yellow stars like our
own Sun have always seemed the obvious place to start. In the past few years, though, researchers have begun to wonder if they've been neglecting a
whole class of likely targets: red dwarfs.
Smaller, cooler, and fainter than the Sun, red dwarfs give out just a feeble red glow. More than a dozen of these puny stars reside within as many
light-years of Earth, yet they're so faint that not a single one is visible to the unaided eye. It was always thought that any planet orbiting a red
dwarf would be an extremely unlikely place to find life. But it now looks as though these dim red suns could harbour most of the Galaxy's
This is great news for anyone hoping to find hospitable planets outside the Solar System. While stars like the Sun are relatively rare, four out of
five stars in our Galaxy are red dwarfs. "We all want to find habitable planets out there," says Laurance Doyle, an astronomer at the SETI Institute
in Mountain View, California. "The fact that we can now rule in 80 per cent of the stars is a positive note for almost everybody."
For decades, the arguments against finding life around red dwarfs have seemed secure. These stars owe their dimness to a misfortune of birth--when
they formed they only acquired between 8 and 60 per cent as much mass as the Sun. As a result, their cores are cool and the nuclear reactions take
place at a slow rate, providing little energy. The nearest red dwarf--Proxima Centauri, which is 4 light-years from Earth--emits less visible light in
a century than the Sun does in a week.
please visit the link for the rest of the interesting article