How do we find asteroids?

Have you noticed the Moon is brighter some nights than others? And it looks like the Moon changes shape? We call these changes the phases of the Moon.

An Orrery is a moving, mechanical model of the Solar System. It shows how all of the planets orbit around the Sun.

Have you noticed that your shadow changes over time? The cartoon on this page shows why shadows change during the day.

In the UK, we experience 4 seasons each year. These are spring, summer, autumn, and winter. You may have noticed that the weather changes during each season. But have you noticed any other differences? 

Many years ago, a mathematician named Johannes Kepler created a set of rules explaining planets' movement in our Solar System.