To noth or not to noth - is that the question?

Wednesday, 11 January 2012

Dark Things and Nothing

Fully 70% of the matter density in the universe appears to be in the form of dark energy. Twenty-six percent is dark matter. Only 4% is ordinary matter. So less than 1 part in 20 is made out of matter we have observed experimentally or described in the standard model of particle physics. Of the other 96%, apart from the properties just mentioned, we know absolutely nothing.

Lee Smolin (2006). The Trouble with Physics [p. 16].

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