Astronomy

1. Force of attraction that causes objects to move towards each other
3. Planet with poisonous atmosphere
5. Center of the Solar System
6. The path that an object takes in space when it goes around a star, a planet, or a moon
7. The largest planet in the Solar System
8. Planet that has a very large system of rings
9. Region of space from which nothing, including light, can escape
11. Small object in the Solar System that orbits around the Sun
13. star Very small and dense star
16. Large celestial object that orbits a star

2. The main, important tool for astronomy
4. Celestial body that orbits another body
5. Celestial body that radiates heat and light
6. Location used for observing celestial bodies and events.
10. Ice ball with long tail moves around in outer space
12. The only planet known to accommodate life.
14. Everything that exists, including all of time and space and its contents
15. Group of many stars, along with gas, dust, and dark matter