Discovery of a new population of high-energy gamma-ray sources in the Milky Way.

Discusses the discovery of a population of high-energy gamma-ray sources in the Milky Way. Appearance of a cluster of faint sources north of the Galactic Center, which is part of a broader class of faint objects at mid-latitudes; Association of the mid-latitude sources with the Gould belt of massive stars and gas clouds; Theories on the origin of the gamma-ray sources.