The Musca reference article from the English Wikipedia on 24-Jul-2004
(provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Musca

For people who check facts
Musca (abbreviation Mus, genitive Muscae) is one of the minor southern (declination −70 degrees) constellations. It contains the soft X-ray transient Nova Muscae 1991 which is a binary star, where one of the stars is a black hole. During the 1991 outburst, radiation produced by positron annihilation was detected from Nova Muscae.

Image:Musca_constellation_map.png