Across
- 4. The study of celestial objects, space; physical universe as a whole.
- 6. The four planets beyond Mars: Jupiter, Saturn, Uranus, and Neptune.
- 9. One complete spin on the axis.
- 10. a group of many rock objects located roughly between the orbits of the planets Mars and Jupiter
- 12. A natural or artificial object in space that circles around another object.
- 13. The Sun and everything that moves around it.
- 16. The tendency of a moving object to keep moving in a straight line or any object to resist a change in motion.
- 17. Any of the patterns that are formed by a group of stars in the night sky.
Down
- 1. The force of attraction between any two objects due to their mass.
- 2. The four planets closest to the sun: Mercury, Venus, Earth, and Mars.
- 3. An object in space that produces its own energy, including heat and light.
- 5. A celestial body that orbits around the sun.
- 7. the brightness of a star perceived by an observer on Earth.
- 8. A chart or map showing the relative apparent positions of the stars, as seen from the earth, in a particular area of the sky.
- 11. An astronomy tool designed to make distant objects appear nearer and larger, using lenses and curved mirrors. (i.e. Galileo)
- 14. The star at the center of our solar system that supplies heat and light to Earth; its enormous gravity keeps the solar system in orbit
- 15. The path one object travels around another object.
