Across
- 2. An area in space with gravity strong enough to prevent light from escaping
- 4. Pieces of rock that fall from space, creating a streak of light in the sky
- 8. A star explosion
- 11. The distance between the center of the Earth to the center of the Sun
- 13. A repeating path an object takes in space due to gravity
- 14. A collection of stars that form certain shapes in the sky
- 17. Any object in space that orbits a planet or star
- 18. The spinning motion of an object around its axis
- 19. The distance light travels in a year
Down
- 1. A star and the objects that orbit it
- 3. The ejection of charged particles from a sun
- 5. The layer of gases covering a celestial body
- 6. A massive collection of stars and their solar systems
- 7. The universe is everything in space including innumerable galaxies
- 9. An relatively small object orbiting the sun comprised of metals and minerals
- 10. A lump of frozen gas, rock and dust that orbits the sun
- 12. An object from space that passes through an atmosphere and hits the ground
- 15. A massive cloud of dust and gas in space in which new stars are born
- 16. The very dense, collapsed core of a star
- 17. A glowing ball of gas held by its own gravity and powered by nuclear fusion