Life could have been started on Earth perhaps of the meteorite from Mars that landed on Earth. Earth rotates once in 23h, 56min. Mars rotates in 24h, 37min. Earth and Mars are made of about the same material. Earth in 1 year.
Earth is unique to other planets because it is the only planet known to have water.
It may be not unique to the moons because water may be under the surface of Jupiter's moon, Europa. Also, the satellite, Clementine, may have found a patch of ice in a crater on the Moon.