Mercury is the smallest and closest planet to the sun in the Solar System. Its orbit around the Sun takes 87.97 Earth days, the shortest of all the planets in the Solar System
The title maybe funny, but.. it's true, Mercury can have no potential life currently, Daytime Temperatures can reach 430 Celsius and can drop to a cool -180 degrees Celsius at night.
As I said before, mercury is really small! Pluto was not a planet anymore, because iIt's smaller than any other planet -- even smaller than Earth's moon, and that's reaaaaally small and it has not cleared its neighboring region of other objects.. Mercury on the other hand, is smaller than Ganymade but a little bigger than our moon, but it does fit the three criterias of becoming a planet. That is why scientists had left it alone! Who needs size? There are many more facinating things about mercury that we have left to explore!