Because Mercury orbits the Sun much faster than Earth.
It takes Earth 365 days to orbit the sun once, but it only takes Mercury 88 days.
Mercury, at about 88 Earth days.
mercury
A Mercury 'year' is 88 earth days.
88 days.
It takes the planet Mercury the equivalent of 59 Earth days to make one revolution on its axis. Mercury is the closest planet to the Sun.
Mercury and Venus
The question is inconsistent. Rotation is the period a planet or moon rotates about its own axis. Revolution is the period a planet or moon revolves about its parent planet or sun. Mercury takes 88 Earth days to revolve about the Sun. It takes 59 Earth days to rotate about its own axis.
Mercury
88 Earth days
Mercury has the shortest year. It's year is about 88 Earth days.
The planet nearest to having this is Mercury.Actually, Mercury has nearly 88 Earth days in its year.Also, the planet Uranus has about 84 Earth Years in its year.
Mercury has a year of length 88 Earth days.