Any place where the matter density was unusually low would serve his purpose equally well.

The dark matter density drops off with distance from the galactic center.

Increasing the local matter density's the way to do it, of course.

Second language proficiency and age at acquisition affect grey matter density in the brain.

Thus the gravitinos mentioned above would decay and will not contribute to the observed dark matter density.

So far, the comparisons point to a universe with a relatively low matter density, as other astronomical measurements have suggested.

It threw us right out of the Galaxy, into a region where the matter density is one ion per cubic light.

The third peak can be used to get information about the dark matter density.

If the matter density is high enough, past a critical value, the universe must be closed.

For example, consider fluid systems described in terms of temperature, matter density, and pressure.