Unveiling the Enigmatic Interior of Dwarf Planet Eris

Scientists have gained a better understanding of the internal structure and composition of the dwarf planet Eris, which is similar in size to Pluto. Research based on its orbital relationship with its moon Dysnomia suggests that Eris has a rocky interior beneath an icy shell. Unlike Pluto, Eris is thought to have experienced enough heat in its history to melt, causing the rock to sink to the center. Eris has a higher concentration of rock and a lower ice content compared to Pluto, making it more massive. The new findings highlight the uniqueness of each dwarf planet and caution against inferring too much from what is known about Pluto.