  The goal of the Orbiting Wide-field Light-collectors (OWL) mission is to
study the origin and physics of the highest energy particles known in nature,
the ultrahigh energy cosmic rays (UHECRs). The OWL mission consists of
telescopes with UV sensitive cameras on two satellites operating in tandem to
view in stereo the development of the giant particle showers induced in the
Earth's atmosphere by UHECRs. This paper discusses the characteristics of the
OWL mission.
