Pluto's 'almost twin' dwarf planet Eris is surprisingly squishy

Pluto's 'almost twin' dwarf planet Eris has a rocky core blanketed by an icy shell, which appears to be flexing slowly.

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Chile ,Greece ,Greek ,Mike Brown ,Francis Nimmo ,University Of California Santa Cruz ,International Astronomical Union ,Dwarf Planet Eris ,Almost Perfect Pluto ,California Santa Cruz ,