| Astrophysics (Index) | About |
The Hills Cloud (or Inner Oort Cloud or Inner Cloud) is a theorized cloud of minor planets and comets somewhat closer than the Oort Cloud, roughly in the range of 3,000 to 20,000 AU from the Sun. The Oort Cloud would seem to be depleted by now if not somehow replenished, and the Hills Cloud, which would be denser, would replenish it. The most distant known trans-Neptune objects are candidate members.