In a pair of papers using different methods, astronomers working with data from the 2dF Galaxy Redshift Survey have determined that dark matter in the universe is distributed the same way as visible galaxies are.

• The 2dF Galaxy Redshift Survey: The bias of galaxies and the density of the Universe
• The 2dF Galaxy Redshift Survey: The amplitudes of fluctuations in the 2dFGRS and the CMB, and implications for galaxy biasing