Tycho Brahe’s model

See some key dates relating to early discoveries about natural and artificial satellites in this timeline.

Since the earliest times, humans have made observations of the night sky. These observations, particularly of the Earth, Moon, Sun...

In this activity, students use models to visualise the layers inside the Earth.

Ice caps have come and gone over the Earth’s surface for many millions of years. What has caused the cyclical...

Since the earliest times, humans have made observations of the night sky. These observations, particularly of the Earth, Moon, Sun...