Phy.org logo

Top: Science: Astronomy: Cosmology: Dark Matter (22)

DescriptionBy observing galactic motions and from cosmology we know that there is a mass in the Universe that we cannot observe so far. It is called dark matter, as opposed to bright stars. It could be some kind of elementary particles.

See also:

Media publications

Last update: Jul 4, 2010 07:57:39. Phy.org is a private web site, powered by the Open Directory Project.