Dark matter core left behind from wreck between massive clusters of galaxies defies explanation
Friday, March 2, 2012 - 11:30
in Astronomy & Space
Astronomers using data from NASA's Hubble Telescope have observed what appears to be a clump of dark matter left behind from a wreck between massive clusters of galaxies. The result could challenge current theories about dark matter that predict galaxies should be anchored to the invisible substance even during the shock of a collision.