An eclipse is when an object passes through the shadow of another. A solar eclipse occurs when the Earth moves through the shadow cast by the Moon. The sky gets dark, like at night-time!

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

An orbit is the path an object takes in space around another. The Moon makes 1 complete orbit of the Earth every 27.3 days. It travels around the Earth at about 4,000 kilometres an hour.

The Earth orbits the Sun at a speed of around 30 kilometres per second!