Trans-Neptunian Objects (TNOs) are solid bodies orbiting the Sun beyond Neptune, including Pluto, Eris, and comets. Most are found in the Kuiper belt, consisting of methane, ammonia, and water ice. TNOs can have eccentric or inclined orbits, and some may be Mars-sized. Trans-Neptunian Object (TNO) is a generic term that applies to any solid body […]