We use this to watch the stars
telescope
An icy rock travelling through the space with a tail
comet
The blue planet we live on
The Earth
Large group of stars and planets
galaxy
The place where you can see the planets and stars
Planetarium
man made objects that send digital information across the world
satellites
Astronauts travel around te Earth on it
spacecraft
A type of transport which we use to travel by using warm air
hot air ballon
It's a type of gas
helium
Who studies planets?
astronomer
