Space: Pluto and its moon Charon form a binary system — Charon…

Question

Did you know? Pluto and its moon Charon form a binary system — Charon is so large (50% of Pluto's diameter) that they orbit a common centre of gravity OUTSIDE Pluto. No other planet in our solar system has this. Some astronomers argue Pluto-Charon should be recognised as a "binary planet".

Accepted Answer

Pluto and its moon Charon form a binary system — Charon is so large (50% of Pluto's diameter) that they orbit a common centre of gravity OUTSIDE Pluto. No other planet in our solar system has this. Some astronomers argue Pluto-Charon should be recognised as a "binary planet".

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