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| This Hubble Space Telescope image shows the Pluto-Charon system in some detail. The size and mass of Charon, very large relative to Pluto, make this truly a double planet. |
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| This Hubble Space Telescope image shows the Pluto-Charon system in some detail. The size and mass of Charon, very large relative to Pluto, make this truly a double planet. |
The best ground-based telescopic images are barely able to resolve the two bodies, which are only about 0.6 arcseconds apart as seen from the Earth, whereas the HST can easily separate them.