angle

Which planet has longer day than it has a year?

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3+ months ago by angle
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planet
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Answers (2)

SmakRabit

The planet Mercury comes close. It rotates only three times in two of its years. Its year is a little more than 88 Earth days long which means that it's 'day' (one full rotation) is almost 60 Earth days.

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Jackofall

Most planets rotate on their axes in an anti-clockwise direction, but Venus rotates clockwise (called "retrograde" rotation) once every 243 Earth days—the slowest rotation period of any planet.
A Venusian sidereal day lasts longer than a Venusian year (243 versus 224.7 Earth days).
Venus's equator rotates at 6.5 km/h (4.0 mph), whereas Earth's is approximately 1,670 km/h (1,040 mph). Because of the retrograde rotation, the length of a solar day on Venus is significantly shorter than the sidereal day, at 116.75 Earth days (making the Venusian solar day shorter than Mercury's 176 Earth days); one Venusian year is about 1.92 Venusian (solar) days long.

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