Across
- 4. the explosion of a star
- 5. basically a tiny universe inside of the real universe. comprised of nebulae and solar systems
- 6. a forming solar system
- 8. a spinning disk inside a galaxy comprised of a central star (sun) and planets orbiting it. (two words)
- 11. when something is moving away it appears red
- 12. the ever-expanding area the big bang created
Down
- 1. the most commonly found element in the universe
- 2. anything the human can interact with its senses there is a tiny more amount of it than anti-matter
- 3. a mass that is orbiting around a star
- 7. the small particles that make up interstellar clouds (two words)
- 9. any celestial body orbiting a planet
- 10. mainly made of helium and hydrogen. giant heat mass balls