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Triton: The captured moon that orbits Neptune in reverse

Triton is one of the strangest moons in the solar system. It orbits Neptune in the opposite direction of the planet’s ...
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New capture scenario explains origin of Neptune’s oddball moon Triton

Neptune’s large moon Triton may have abandoned an earlier partner to arrive in its unusual orbit around Neptune. Triton is unique among all the large moons in the solar system because it orbits ...