Mars is 6,786 Km. in diameter. Big is a relative term. It is big compared to its moons but small compared to the sun
they are very bad if mars storms happen we get lollipops
They both aren't very big but mars might be bigger
Not very. Mars is a little red dot in the eastern sky just before dawn. It will be a little bigger in January, 2010.
There are new space suits needed, because on Mars you have very big sand storms.
yes it is big!
it is a big ball of iron in mars
mars is smaller than the Earth
He lives in Mars because his last name is Mars
It is as big as an apple core
Mars is about twice as big as the Moon.
Earth is big. Mars is small.
mars is very heavy!