STEP 2 - Compare the football and modelling clay ball in size ... Moon does not make its own light like a star. The Moon appears bright because it reflects light from the Sun. Like the Earth ...

The Earth formed over 4.6 billion years ago out of a mixture of dust and gas around the young sun. It grew larger thanks to countless ... Earth grew to its final size through one last major collision ...

Dwarf planet Pluto and our Earth ... sun. The only other exception is dwarf planet Pluto, which itself is small at 2,250 kilometres across, but has a moon, Charon, that is half its size.