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Articles by: Bruce Lieberman

This NASA Hubble Space Telescope image shows the distribution of dark matter in the center of the giant galaxy cluster Abell 1689, containing about 1,000 galaxies and trillions of stars. Dark matter is an invisible form of matter that accounts for most of

Searching High and Low for Dark Matter (Q+A)

By Bruce Lieberman

Astrophysicists are getting to the depth of dark matter.