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Re: Drakes Equation



Despite searching for gas giants with Hubble etc around nearest 100 stars, no
giant planets have been spotted. Also, super computer simulations of forming
solar systems easily produce inner rocky planets, but not gas giants.
Finally, a comet from another star's Oort cloud has never been seen around
these here parts, although by now they should have if gas giants that clear
inner solar systems of comets are common. The current tentative conclusion,
cozy solar systems free of billions of inner comments like ours are probably
rare. 
A few more years research should settle the matter

GSPaul