Across
- 3. Our home Galaxy
- 5. A celestial object consisting of a nucleus of ice and dust and, when near the sun, a ‘tail’ of gas and dust particles pointing away from the sun.
- 6. The man who discovered gravity
- 7. The closest galaxy to ours.
Down
- 1. A collection of 100 million stars.
- 2. The largest planet in the solar system
- 4. A small rocky body orbiting the sun.