1
This person travels and works in space.
2
This planet is nearest the Sun.
3
A very big group of stars and planets.
4
This vehicle takes astronauts into space.
5
There are 8 of them. They move around the Sun.
6
To go around
7
The name of the planet we live in.
8
This type of planet is really small, for example, Pluto.
9
This star is at the centre of our solar system.
