Unveiling the Enigmatic Interior of Dwarf Planet Eris

Scientists have gained a better understanding of the mysterious dwarf planet Eris, which is similar in size to Pluto but has never been visited. Research based on its orbital relationship with its moon Dysnomia suggests that Eris has a rocky interior below an icy shell. Unlike Pluto, Eris is thought to have separated rock from ice, indicating that it got hot enough at some point to melt. Eris has a higher rock content and a slower churning motion of ice, driven by leftover heat. The findings highlight the uniqueness of each dwarf planet and caution against inferring too much from what is known about Pluto.