Across
- 3. One trip around the sun is called a ____?
- 4. You can use this to look at far away objects
- 7. The closest planet to the sun
Down
- 1. Is no longer considered a planet
- 2. The planet that we live on
- 5. The explosion of a star is called a ______?
- 6. The star at the centre of our solar system is the ____?