Planetary Systems

5. The complete series of phases the Moon goes through in about 29.5 days.
6. A scientist who studies celestial bodies, space, and the universe as a whole.
7. The galaxy that contains our solar system, composed of billions of stars, including our Sun.
8. A group of stars that forms a recognizable pattern in the night sky, often named after mythological figures or objects.
9. The shape of the Moon when it is less than half illuminated, resembling a smile.
12. A small rocky body that orbits the Sun, primarily found in the asteroid belt between Mars and Jupiter.
14. The four inner planets (Mercury, Venus, Earth, Mars) that are rocky and have solid surfaces.
15. A large planet that is primarily composed of gases, such as Jupiter and Saturn.

1. The different shapes of the illuminated part of the Moon as seen from Earth, including new moon, crescent, first quarter, gibbous, and full moon.
2. The four main points of a compass: north, south, east, and west, used for navigation and describing locations.
3. An event when one celestial body moves into the shadow of another celestial body, blocking the light.
4. A celestial body that orbits a planet, such as the Moon orbiting Earth.
10. The act of carefully watching and recording events or objects in order to gather information.
11. An optical instrument that makes distant objects appear closer and clearer, used by astronomers to study celestial bodies.
13. The curved path an object takes as it revolves around another object in space due to gravitational forces.