Astronomy

1. System A system consisting of a star and the planets and other objects that orbit it.
3. A vast system of stars, gas, and dust bound together by gravity.
5. An object that orbits a planet, moon, or star, such as a natural moon or an artificial satellite.
8. Everything that exists, including all galaxies, stars, and planets.
11. The partial or total obscuring of one celestial body by another, like a solar or lunar eclipse.
12. A group of stars that form a recognizable pattern in the night sky.
13. A celestial object composed of ice, dust, and gas that orbits the sun.
14. A massive, luminous sphere of plasma that emits light and heat.
15. A celestial body that orbits a star, like Earth or Mars.

2. The path that a celestial body follows as it moves around another body in space.
4. The scientific study of celestial objects and the universe.
6. A small, rocky object that orbits the sun, often found in the asteroid belt.
7. An optical instrument used to observe distant objects in space.
9. A small celestial body that enters the Earth's atmosphere and burns up, creating a meteoroid.
10. The force that attracts two objects with mass toward each other.