Across
- 2. our earth belongs to the galaxy called the ______ way
- 3. the layer of air that surrounds the earth
- 5. a type of aircraft that is launched into space
- 7. what we use to see other stars and planets far away from us
- 9. on earth, we normally have 4 _______
Down
- 1. the study of everything in the universe, including planets, stars and space
- 2. we see this every night, it orbits around the earth
- 4. we see this every morning, the earth orbits around this star
- 6. the planet we are living on
- 8. earth, sun and other planets are all located in ________