The solar system consists of the Sun surrounded by planets, comets and asteroids in orbit. Most planets in the solar system have moons in orbit around them.
What is at the centre of our solar system?
What force keeps the planets in orbit around the Sun?
What is a year in terms of a planet?
What are comets made from?
Why is it often easy to see comets?
What are asteroids made from?
What was a direct effect of a large asteroid collision with Earth many years ago?
What is a satellite?
Communication satellites are often in geostationary orbits. What does this mean?
How is orbital speed calculated?