] What do you call a group of black holes ... a flock, a
] brace, a swarm? Monitoring a region around the center of
] our Galaxy, astronomers have indeed found evidence for a
] surprisingly large number of variable x-ray sources -
] likely black holes or neutron stars in binary star
] systems - swarming around the Milky Way's own central
] supermassive black hole.

APOD: 2005 January 28 - The Swarm