Across
- 4. A line that forms when the sky and land collide.
- 8. The path a planet takes around the sun.
- 10. Planets that are inside of the asteroid belt.
- 12. Planet that intersected with another planet's orbit and is too small to be a planet but still orbits the sun.
- 13. An imaginary line that runs from the north pole to the south pole.
- 14. Small, rocky bodies that orbit, or travel around, the sun.
- 15. When meteoroids enter Earth's atmosphere (or that of another planet, like Mars) at high speed and burn up.
Down
- 1. An imaginary line that goes horizontally around the world.
- 2. The distance light travels in one year.
- 3. A group of stars that make a pattern.
- 5. A scientist who studies the objects in the sky, including planets, galaxies, black holes, and stars.
- 6. An object that orbits around the sun.
- 7. The amount of heat in something.
- 9. Occurs when one heavenly body such as a moon or planet moves into the shadow of another heavenly body such as the sun.
- 11. Natural, giant, glowing balls of gas.