Far beyond Pluto lies a mysterious region called the Oort Cloud 🌌 #universetoday #oortcloud

本站添加: 2026-05-17

The Oort Cloud is a massive spherical region far beyond Pluto that surrounds our entire solar system, containing billions of icy objects and comets left over from the solar system's formation; it may extend nearly 100,000 astronomical units (about 2 light-years) from the Sun, and while scientists believe many long-period comets originate from this region, its existence is based on mathematical models and comet behavior rather than direct observation.