Across
- 2. Scientists believe this theory as to how the universe was created
- 4. fusion How do stars produce their own energy?
- 5. Planets reflect _____ from the sun
- 7. Largest stars, bigger than the sun
- 9. A cloud of dust and gas in outer space
Down
- 1. Artificial body placed in orbit around a planet in order to collect information for communication
- 3. From earth, what is the brightest celestial object?
- 6. The galaxy that earth is in
- 8. The planets of our solar system orbit around this