Multiple choice

The planet with the shortest year is

  1. Earth

  2. Mercury

  3. Mars

  4. Pluto
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mercury has the shortest year (orbital period) of all planets in our solar system at only 88 Earth days. This is because it is closest to the Sun and must travel the smallest orbit at the highest average speed to maintain its orbit. Pluto (though now classified as a dwarf planet) would have a much longer year due to its vast distance from the Sun.

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