Editing Hadean Eon (section)

=== Kuiper Belt and Oort Cloud Formation ===
The <u>Kuiper Belt</u>, extending from beyond Neptune's orbit out to approximately 55 astronomical units (AU) from the Sun, began to take shape in the Hadean era. It is composed of icy bodies, including dwarf planets like <u>Pluto</u>. The formation of the Kuiper Belt was likely influenced by the gravitational perturbations of the giants, particularly <u>Neptune</u>.

The <u>Oort Cloud</u> is a distant, spherical shell of icy objects surrounding the Solar System, believed to extend up to 100,000 AU from the Sun. It is thought to have formed from the scattering of icy bodies by the gas giants' gravitational forces into distant orbits. Some of these objects were likely ejected to the cloud's outer reaches, while others were pulled into the inner Solar System as comets.