Across
- 3. a small bright heavenly body that develops a cloudy tail as it moves in an orbit around the sun
- 6. Small, rocky objects that orbit the Sun
- 8. The fifth planet from the Sun
- 10. A group of stars that form a pattern.
- 12. a large natural satellite that revolves around a star
- 14. is the difference between astronomy and astrology
- 15. something related to the moon
- 16. someone who studies the origin and structure of the universe, including its planets, stars, galaxies and black holes
- 18. star A system of two stars where one revolves around the other or both revolve around a common centre
Down
- 1. a person trained to travel and work in a spacecraft
- 2. a heavenly body that emits light
- 4. Basic units of matter that every solid, liquid, gas and plasma is composed of.
- 5. a large natural satellite that revolves around a planet
- 7. body a natural object outside of the Earth's atmosphere.
- 9. the smallest planet in the solar system, called a dwarf planet
- 11. the planet that is eighth in order of distance from the sun
- 13. is the branch of science that studies everything outside of Earth's atmosphere
- 17. the star in our solar system whos light creates out day and night