1.   However, our uncertainty about the present average density of the universe is even greater.

2.   The theory also predicted that the average density of galaxies and similar objects should be constant both in space and time.

3.   To answer this question we need to know the present rate of expansion of the universe and its present average density.

4.   Bouguer anomalies include a correction for altitude but only on the basis of an average crustal density.

5.   As I understand it the structure plan is based on an average density employment density of forty three.

6.   Even the long-sought second number, related to the average density of cosmic matter, may be coming into focus.

7.   So a simple argument is that if you mix enough bubbles into a liquid to lower its average density, an object floating on its surface should sink.

8.   Such estimates are necessarily imprecise because the age also depends on the average density of matter in the universe, which is another cosmic unknown.