This planet has the fastest winds measured in the Solar System.

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Neptune's existence was predicted mathematically before its confirmed observation. Source: Neptune ↗

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46This attractive force keeps planets in orbit around the Sun.RECALL
Gravity
The Sun's gravity curves their paths
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47This distance unit is based on the Earth–Sun separation and is defined as exactly 149,597,870,700 metres.RECALL
Astronomical unit
One AU is about 150 million kilometres
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48This term names a planet orbiting a star other than the Sun.RECALL
Exoplanet
Thousands have been confirmed
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