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Location: UFOUpDatesList.Com > 2007 > Jun > Jun 15

Drake Equation Factor Increases Billion-Fold

From: Ray Dickenson <r.dickenson.nul>
Date: Fri, 15 Jun 2007 22:19:49 +0100
Fwd Date: Fri, 15 Jun 2007 21:32:10 -0400
Subject: Drake Equation Factor Increases Billion-Fold

Hello List,

Many of us can remember chauvinist experts and text-books that
claimed that our Solar System was unique and there were probably
no other planets in the galaxy or even in the universe.

Accordingly, the 'planetary density' factor in the Drake Equation
has been set pessimistically low.

Big science now has to admit it has dramatically increased - as
we can suspect some others should be - by a billion or even a
trillion-fold. Here's 14 June 2007 quote from our pal Seth

"'Virtually all single stars (stars that are not in binary
systems) must have planets of some sort - rocky, gaseous,
Neptune-like, and so forth,' says Marcy. 'Among the binary stars,
all those separated by at least the distance from us to Pluto
also have planets of some sort.'

Since roughly half of all stars are binary, and half of those are
widely separated, the bottom line is that Marcy suspects that
roughly three-fourths of all galactic stars have planets. From an
astronomical perspective, that's as good as all of them.
 ...the visible universe contains a hundred billion trillion
worthy worlds."


Realizing that other Drake factors have been unrealistic, like
specifying only carbon-based life and its necessary conditions,
should bring big science to a drastic, even shocking
reassessment. But, to save embarrassment, that'll probably only
happen in a decade or so.

Short summary of last few years of planet-finding controversies



Ray D

Listen to 'Strange Days... Indeed' - The PodCast



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