This page discusses the Oort Cloud, a theoretical spherical region of icy objects located up to 50,000 AU from the sun, which is considered the primary source of long-period comets. No Oort Cloud Obje...This page discusses the Oort Cloud, a theoretical spherical region of icy objects located up to 50,000 AU from the sun, which is considered the primary source of long-period comets. No Oort Cloud Objects (OCO) have been discovered yet, and the Oort Cloud is believed to delineate the outer boundary of the solar system.
