Year is longest on which planet?

A. Jupiter
B. Earth
C. Mercury
D. Neptune
E. None of above

Check Answer

The correct answer is A) Neptune.

The year (the time it takes for a planet to orbit around the sun) is longest on planet Neptune. It takes about 164.8 Earth years for Neptune to complete one orbit around the sun. This is because it is the farthest planet from the sun, and it takes the longest for it to complete one orbit.

Here is the complete list of years by NASA.
Mercury: 88 days
Venus: 225 days
Earth: 365 days
Mars: 687 days
Jupiter: 4,333 days
Saturn: 10,759 days
Uranus: 30,687 days
Neptune: 60,190 days
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