What makes this world interesting
It preserves evidence of the Solar System’s formation. New Horizons flew past Pluto, then Arrokoth. The trans-Neptunian region contains populations with varied orbits, rather than a single regular belt.
The portal / Solar System / The Kuiper Belt
Moons and regions
The Kuiper Belt
A reservoir of icy worlds
A vast region beyond Neptune, populated by icy bodies including Pluto.
- Location
- Beyond Neptune
- Examples
- Pluto · Arrokoth
Observe or explore it
These bodies are very faint. Explore the fact sheets and mission images to understand their shapes and surfaces.
Connect the discoveries
Sources and reference information
NASA Science — The Kuiper Belt
Rounded educational data, sources consulted on 18 October 2026. Orbital distances are mean reference distances from the Sun, not current distances from Earth. Periods are expressed in Earth time. The planner provides date-specific positions for supported targets.