On 4/19/12 2:22 AM, jacob navia wrote:
See
http://www.eso.org/public/archives/r...17/eso1217.pdf
and
http://www.eso.org/public/news/eso1217/
The look at 13,000 light years distant
represents ~5 percent of the milky way disc
with galactic diameter 120,000 light year
(probably much more with dark matter halo)

26,000^2/120,000^2 = .047

Any spherical assumption
would make the observed milky way fraction approach 1 percent

26,000^3/120,000^3 = .010

Dark matter may be clumpy.
Observations indicate we are not in a clump.

Richard D. Saam