Across
- 3. What our sun is
- 5. A series of planets, moons, asteroids, etc. orbiting a star
- 7. A force that draws objects to its center
- 8. Saturn's largest moon
- 9. What happens when a star implodes then explodes
- 11. Smallest planet in our solar system
- 14. So much gravity, not even light can escape
- 17. What a planet does to a star
- 18. Opposite of dark matter
- 20. A system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity
Down
- 1. Opposite of matter
- 2. A highly magnetized rotating neutron star that emits beams of electromagnetic radiation out of its magnetic poles
- 4. A ball of ice
- 6. Bowl-shaped depression
- 7. A type of light radiation
- 10. Largest planet in the solar system
- 12. Roman god
- 13. Dark part of the moon
- 15. Natural satellite of a planet
- 16. White part of the moon
- 19. Outer most inner planet