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Researchers say finding life-bearing worlds around red dwarf starsless likely
Here's a bit of far-fetched speculation for you. We've barely just
photographed our first set of extrasolar planets, and we've only indirectly known about the planets for a decade and a half, but already there are people assigning odds on how likely there is going to be life around a specific subset of the worlds. Specifically they are saying that worlds around red dwarf stars are not likely going to be stable enough in their orbits to support life for long. This reminds me of all of absolute certainty to which scientists "knew" how planetary systems must form, based on the model of our own Solar system. Then all of a sudden when we actually started discovering the extra-solar planets, we started seeing all kinds of wierd things like Hot Jupiters, which totally blew our "absolutely certain" models out of the water. Researchers Say Tides Can Cut Life Short On Planets Orbiting Smaller Stars "But Earth-like planets around stars smaller than our sun won't be liveable for long, according to a study led by Rory Barnes, a research associate with The University of Arizona's Lunar and Planetary Laboratory. Such planets can face "tidal extinction" within about a billion years. " http://www.physorg.com/news147014943.html |
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