Oort Limit The outer boundary of the Oort Cloud and, as such, the furthest frontier of the Sun's domain. It is thought to lie at a heliocentric distance of about 100,000 astronomical units (15 trillion km, 9 trillion miles), or more than one third of the distance to the nearest star. Related category COMETS Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |