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Triton orbits Neptune backward

Neptune's largest moon, Triton, travels around the planet in the direction opposite Neptune's rotation.

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This retrograde orbit suggests that Triton did not form beside Neptune. Scientists think it was probably captured from the Kuiper Belt by Neptune's gravity.

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The Moon is drifting away from Earth

The Moon moves about an inch farther from Earth every year.

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Saturn's north pole has a hexagon

A six-sided jet stream circles Saturn's north pole in the shape of a hexagon.

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Hubble circles Earth every 95 minutes

The Hubble Space Telescope orbits at about 17,000 miles per hour and circles Earth once every 95 minutes.

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Triton orbits Neptune backward

Why it is true

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The Moon is drifting away from Earth

Saturn's north pole has a hexagon

Hubble circles Earth every 95 minutes

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