What determines the length of one year?


Revolution around the sun to determine the length of one year. This is often referred to as the planet’s orbit or orbit path. On Earth, you probably know that one year takes 365.26 Earth days. This is how long it takes for the Earth to revolve once around the Sun.

Pluto, the dwarf planet has a very large orbit path and it takes almost 248 years to complete one full revolution around the Sun.

Mercury is the closest planet to the Sun and so has a smaller orbit path – it takes just 88 Earth days for the planet to orbit once around the Sun.
The time it takes the Earth to orbit around the Sun is 365.26 Earth days (1 Earth year)
Earth rotation to the sun.Credit: Theplanets
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