Across
- 4. The star that heats the Earth.
- 5. The Earth is an example.
Down
- 1. The Earth's natural satellite.
- 2. Any one of the very large groups of stars that make up the universe.
- 3. All of space and everything in it including stars, planets, galaxies, etc.
- 4. A natural luminous body visible in the sky especially at night.