Last Updated: Wednesday, July 11, 2012, 08:54
Observation of outbursts of super-hot gas by a CSIRO radio telescope has confirmed the identity of the first known “middleweight” black hole.
Last Updated: Thursday, February 16, 2012, 14:19
Astronomers using the NASA/ESA Hubble Space Telescope have discovered a cluster of young blue stars surrounding a mid-sized black hole called HLX-1.
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