Northern Ireland Key Stage 3

The Sun is a constant presence in our life on Earth. It gives us the heat and light we need to survive. But it is not a stable place. The Sun is a ball of hot plasma which is constantly changing.

Have you noticed that the Moon doesn't always look the same. Sometimes we can see the full face of the Moon and it becomes the brightest object in the night sky. At other times, it appears as a just small sliver in the sky.

You have probably seen the Moon in the sky but have you ever studied it in detail? 

The Moon is the brightest object in the night sky when its whole face is showing. This only happens at full Moon. So why isn't it always a full Moon? 

Ever wondered how heavy or light you would feel on another planet in our Solar System?