Oort cloud

Noun

Singular Oort cloud

Plural none

1. The Oort cloud is a large group of small bodies of ice and rock that might exist in our solar system beyond the known planets.

   Some comets that we see come from the Oort cloud.

The Solar System (edit)
Star	sun
Planets	Mercury • Venus • Earth • Mars • Jupiter • Saturn • Uranus • Neptune
Dwarf planets	Ceres • Orcus • Pluto • Haumea • Quaoar • Makemake • Gonggong • Eris • Sedna
Small solar system bodies	asteroid belt • comets • Kuiper belt • meteors • Oort cloud • scattered disc
Other	moon • symbols for objects