Mercury is a planet made of rock and metal.
rock much like our own planet
Mercury is a rocky planet.
The element mercury is a metal. The planet Mercury is rocky.
the surfaces of mercury are rock
Mercury is a rocky planet.It's actually a rock because it is one of the inner planets that are all made of rock.The planet Mercury is a dense, rocky, airless world.
by a rock
No, Mercury seems to be inactive rock.
It has no rings but does have rocks.
ya... its basicly a rock
Mercury is a rocky planet.
Mercury, Venus, Earth and Mars.