Saturday, April 7, 2012

Nearby Star May Have More Planets Than Our Solar System

Well, they do unless they're binary stars where the planets were so huge they condensed into a star. And the planets go from so close they're in danger of being consumed, to so far out that the the material they would have been made of was flung out of the stellar system instead - in orbits of the maximum closeness that you couldn't fit another planetary orbit between them. Since every reasonable sized star has a habitable zone, and given the distribution of mass, between 2 and 4 planets have to be in it. Time makes the orbits regular. If the planet in the right spot is too large for Men, it will have a moon of the appropriate size.

This is obvious from the distribution of prestellar masses and the forces that cause stars and planets to form. Who doesn't know this? It's Bode's Law.

See those stars in the sky? They have planets. All of them, near enough as makes no difference. And all of them have planets where liquid water could form. And water is so common that there is water on all of them. And so the Fermi Paradox becomes more intriguing. The stars in the sky where Men cannot live are passing rare - if we can get there.

Let's go already.

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