Oort cloud

A cloud-like structure, named after Dutch astronomer Jan Oort, who proposed it.

Oort cloud

1. Alternative form of Oort Cloud (the Solar System's Oort cloud)

Oort cloud (plural Oort clouds)

1. (astronomy) A roughly spherical region of space composed of comet-like bodies and other minor planets and asteroids that orbit distantly in a planetary system.

• Oort Cloud (the Solar System's Oort cloud)

• Kuiper disc
• Kuiper belt
• asteroid belt