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Old November 26th 15, 06:39 PM posted to sci.astro,sci.physics
Lester Thorpe
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Default Earth might have hairy dark matter

On Wed, 25 Nov 2015 12:50:03 -0500, Yousuf Khan wrote:


Earth might have hairy dark matter | Astronomy.com
http://www.astronomy.com/news/2015/1...ry-dark-matter


This is not likely because ANY significant presence of dark matter
within or near the solar system would disturb the orbital stability.

In other words, if significant amounts of dark matter were present
among the earth and other planets, the stable orbits of the solar system
would have been disrupted long ago.

The stability of the solar system implies an upper limit on the
local density of dark matter and such an upper limit is quite
small.

Thus the problem with dark matter is not just to explain its
nature and composition but also to explain why it is so non-uniformly
distributed within galaxies.