Kuiper Belt

Part of Scales of the Universe.

Kuiper-Belt_HERO AMNH/D. Finnin

If the Hayden Sphere is the size of the Oort Cloud of comets, then this model is the relative size of the Kuiper Belt of comets.

Named after the astronomer Gerard Kuiper, this broad disk of millions of comets orbits the Sun beyond the planet Neptune. The Oort Cloud of comets is five hundred times larger.