Astronomy Club

2. A band of colors, as seen in a rainbow, produced by separation of the components of light.
4. The spinning of an object around its own internal axis.
7. An imaginary line through the center of a body around which it rotates
9. The region of interplanetary space between the orbits of Mars and Jupiter.
11. A moon, planet, or machine that orbits a planet or star.
14. A piece of rock or metal from space that survives its passage through the atmosphere and strikes the ground.
16. The distance that light travels in one vacuum year (about 6 trillion miles).
17. A celestial object consisting of a nucleus of ice and dust; it forms a "tail" when near the sun.
18. A group of stars forming a recognizable pattern that is traditionally named after its apparent form.
20. An optical instrument used to make distant objects appear nearer and larger.
21. A giant cloud of dust and gas in space; often a "nursery" where stars are born.

1. A region of space where gravity is so strong that nothing, not even light, can escape.
3. A small, rocky object that orbits the Sun, mostly found between Mars and Jupiter.
5. A massive system of stars, gas, and dust held together by gravitational attraction.
6. The force that pulls objects toward each other; it keeps planets in orbit
8. A massive system of stars, gas, and dust held together by gravitational attraction.
10. The curved path of a celestial object or spacecraft around a star, planet, or moon.
12. A planet that orbits a star outside of our solar system.
13. A streak of light in the sky produced by a space rock burning up in Earth's atmosphere.
15. An event where one celestial body moves into the shadow of another.
19. The powerful and luminous explosion of a dying massive star.