天文学家在冥王星之外发现了一颗可能体积巨大的新矮行星,它多年来一直隐藏在夜空中最拥挤的区域之一。2026 ED138的发现可能会扩大太阳系的官方范围。Astronomers have uncovered a potentially enormous new dwarf planet beyond Pluto, hidden for years in one of the most crowded regions of the night sky. The discovery of 2026 ED138 could expand the solar system's official