Across
- 5. planets, dwarf planets, moons, asteroids, comets, and stars
- 6. all of space, matter, and energy
- 8. filled with old red stars, very little gas and dust
- 9. and explosion of a dying star
- 10. gas, dust and stars held together by gravitational attraction
- 11. a force that pulls towards the center of mass
- 13. thing where gravity pulls into so even light can not get out
- 14. distance light travels in one year in space
- 15. supporting facts
Down
- 1. flat, rotating disc with stars, gas, and dust
- 2. the average distance between Earth and the Sun
- 3. explanation from experiments or evidence
- 4. galaxy where the sun, star, and solar system are
- 7. a cloud of gas and dust in space
- 12. standard measurement