Across
- 2. light appears more blue when moving closer
- 6. grouping things by similarities
- 8. a celestial object orbiting a star
- 11. using your 5 senses to learn
- 12. light appears more red when moving away
- 13. educated guess base on your observations
- 15. how much space an object takes up
- 16. mass divided by volume
Down
- 1. an object of near infinite density
- 3. a universal force the pulls object "in"
- 4. a massive stars' violent end
- 5. area of space containing billions of stars
- 7. a star and its planets
- 9. the study of the Universe
- 10. all matter and all space
- 14. an object's weight