Focusing on Saturn, and the risk of an asteroid colliding with Earth, this video for KS3/4 physics lessons explains the mystery and science behind planets, asteroids and comets.
Planetary scientist Sheila Kanani shows vivid pictures of Saturn and its moons, taken from the Cassini spacecraft. She reveals what we know about the planet, how far away it is and how it compares to Earth.
Astronomer Jay Tate then talks about asteroids and comets, explaining the dangers of an asteroid colliding into Earth and how their orbits can be tracked.
Back in the classroom, practical demonstrations provide inspiration for teachers teaching the topic of astronomy and space.
