1.
The path an object follows around another in space
3.
A gas giant made up of mainly hydrogen and helium
4.
a collection of stars and their solar systems
5.
All of the existing matter and energy in space
6.
A natural or human-made object that orbits something
7.
an imaginary line through the centre of an object
8.
Earth spins from west to...
9.
When the moon is growing larger
10.
When the moon is growing smaller
11.
A group of stars that form a recognizable pattern
