Space

6. Everything that exists, including all energy, matter, and space
8. A celestial object that orbits a planet or dwarf planet
10. A massive collection of gases, held together by its own gravity and emitting huge amounts of energy
14. A large, round celestial object that travels around a star
15. A grouping of stars, as observed from Earth
16. The time of year when the hours of daylight equal the hours of darkness
17. A darkening of a celestial object due to the position of another celestial object
18. An astronomical event that occurs two times each year, when the tilt of Earth’s axis is most inclined toward or away from the Sun, causing the position of the Sun in the sky to appear to reach its northernmost or southernmost extreme

1. Producing and giving off light; shining
2. A chunk of ice and dust that travels in a very long orbit around the Sun
3. The closed path of a celestial object or satellite as it travels around another celestial object
4. The horizontal angular distance from north measured eastward along the horizon to a point directly below a celestial body
5. Dark spots appear on the Sun’s surface that are cooler than the area surrounding them
7. The path across the sky that the Sun, the Moon, the planets, and the zodiac constellations appear to follow over the course of a year
9. The angular height a celestial object appears to be above the horizon; measured vertically from the horizon
11. The changing direction of Earth’s axis
12. The scientific study of what is beyond Earth
13. A huge, rotating collection of gas, dust, and billions of stars, planets, and other celestial objects
19. The alternate rising and falling of the surface of large bodies of water; caused by the interaction between Earth, the Moon, and the Sun