The Kuiper belt (/ ˈkaɪpər / ⓘ) [2] is a circumstellar disc in the outer Solar System, extending from the orbit of Neptune at 30 astronomical units (AU) to approximately 50 AU from the Sun. [3] It …

Mar 12, 2025 · The Kuiper Belt is a doughnut-shaped region of icy objects beyond the orbit of Neptune. It is home to Pluto and most of the known dwarf planets and some comets.

Nov 17, 2025 · Kuiper belt, flat ring of icy small bodies that revolve around the Sun beyond the orbit of the planet Neptune. It comprises hundreds of millions of objects whose orbits lie close …

On December 7, 2025, we celebrate the 120th anniversary of the birth of Gerard Kuiper, the astronomer whose name the Kuiper Belt now bears. Ironically, Kuiper believed this region no …

Jan 21, 2023 · The Kuiper belt is a thick ring of dwarf planets, comets, and debris out past the orbit of Neptune. The belt contains around one hundred thousand objects that are at least 100 …

Apr 30, 2019 · The Kuiper Belt is a cold donut-shaped region of icy objects that circles the outer solar system beyond the orbit of the eighth planet from the sun, Neptune.

The Kuiper Belt is a disk-shaped region beyond Neptune filled with icy objects left over from the formation of the Solar System. It contains dwarf planets, comet nuclei, and countless smaller …

Jul 27, 2025 · The Kuiper Belt, pronounced “KY-per,” is a vast, toroidal region beyond Neptune’s orbit, extending roughly from 30 to 55 astronomical units (AU) from the Sun (1 AU is the …

May 19, 2025 · The Kuiper Belt is a ring of rocky, icy bodies at the edge of the Solar System. A guide to how it was discovered and what we know about it.

Jun 9, 2023 · There's much more to our solar system than that, though, including a region of the outer solar system called the Kuiper belt. Sitting beyond the orbit of Neptune, the Kuiper …