The planet that moves round the Sun at the highest speed is

A. Jupiter
B. Venus
C. Mars
D. Mercury

Check Answer

The correct answer is D) Mercury.

The planet that moves around the Sun at the highest speed is Mercury. Mercury is the smallest planet in the solar system and is also the planet closest to the Sun. It orbits the Sun at a distance of about 36 million miles (58 million kilometers), which is about a third of the distance from the Earth to the Sun.

Because it is so close to the Sun, it takes only about 88 Earth days for Mercury to complete one orbit around the Sun. This is much shorter than the orbit periods of the other planets in the solar system, which range from about 1.9 years for Mars to about 11.9 years for Saturn. Mercury’s high speed is due to its close proximity to the Sun and its relatively small size, which allows it to be more easily accelerated by the Sun’s gravity.
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