New images from Earth-based telescopes show Pluto and its big moon Charon together.
Sharpest ground-based images of Pluto and Charon
Charon truly is big compared to Pluto; it has an approximate diameter of 1,207 km, while Pluto is 2,330 km. Some astronomers don't call Pluto a dwarf planet, they call the Pluto system a dwarf double planet.
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