Sentences with phrase «matter halo contains»

Not exact matches

This dark matter, which must be distributed in a spherical «halo» around the luminous disc of a galaxy, would have to contain about ten times as much mass as the visible material.

This statement is certainly true if we assume that the only gravitational force present is that exerted by visible matter, but it is true even if we assume that every galaxy in the cluster, like the Milky Way, is surrounded by a halo of dark matter that contains 90 percent of the mass of the galaxy.»

The Milky Way (like other spiral galaxies) is surrounded by a large halo region which contains globular clusters, large clouds of hydrogen gas, and a huge mass of the mysterious dark matter.

The halo has been found to contain some of the missing matter, and therefore, further knowledge about it «can help us learn both how the material got there in the first place, and the rate at which we expect the matter to settle into the galaxy.»