Across
- 4. The spinning of a planet on its axis
- 6. The galaxy we live in
- 7. Made of planets, solar systems and galaxies
- 8. Uses mirrors to reflect and focus light rays from space
- 9. Chunks of rocks that burn when entered into a planets atmosphere
- 10. Studied in relation to the planet they orbit
Down
- 1. Uses convex lenses to bend and focus light to produce images of an object in space
- 2. Used to measure distance to stars in space
- 3. Made of gas, dust and billions of stars
- 5. May have rings and movement is based on revolution around the sun