European astronomers discover Earth-sized planet circling star next door, but it's way too hot
There are 1 comment on the KNUS-AM Aurora story from Oct 16, 2012, titled European astronomers discover Earth-sized planet circling star next door, but it's way too hot. In it, KNUS-AM Aurora reports that:
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“Geologist [I'm Climate Change]”
Since: Mar 07
#1 Oct 17, 2012
This is really impressive news.
Interesting feature here is that tidal forces and resonances between alpha centauri main stars will drive planets circling the stars inward toward the central star over a long interval of time.
The Earth mass planet found by the researchers around Alpha centauri B would have originated further out than its current position and been tidally jogged inward to its current location.
A similar tidal forcing situation (strongest in the ecliptic plane) occurs with the Galilean satellites of Jupiter which have lost the 5th satellite resulting in the Amalthea group remnant ojects, and the "smoke ring" condensing onto Jupiter@ present. Other aspects of the same tidal forcing are enforced tidal resonances with internal tidal heating with the result that the bulk of the remnant Amalthea group has been plated over by the lost volcanic products from Io.
Alpha Centauri is older and somewhat more metal rich than the sun so the inward drift should have caused the loss of at least one planet per star at present.
The other really impressive bit is the fact that they actually found the planet!
Have a nice day: Ag
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