Wednesday, August 19, 2009

A Bad Wave for Mr. Dark?

2 comments:

Tecumseh said...

Such a model, however, could violate a widely held tenant of cosmology known as the Copernican principle.

This theory states that the universe is homogenous—when viewed on a very large scale, different parts of the universe look essentially the same.

The Copernican principle is a built-in assumption of the current favored solutions to Einstein's equations, called the Friedmann-Robertson-Walker space-times.

Hmmm... This sounds dubious. I like the homogeneity assumption. Occam's Razor, and all that jazz.

Tecumseh said...

Scary stuff.