Across
- 2. The edge of a celestial object’s visible disk.
- 5. the distance that light travels in one year
- 8. The ending part of a stars life, an explosion
- 10. an optical instrument designed to make distant objects appear closer
- 12. A large ball of gas that produces a lot of energy
Down
- 1. a system of millions of stars held together by gravity
- 3. a body in space that revolves around the earth
- 4. a huge amount of dense mass that even light cannot escape it gravitational pull
- 6. when the moon appears to be more than half
- 7. an obscuring of the light from one celestial body by the passage of another
- 9. when at the equator, the sun is directly overhead at noon
- 11. celestial object consisting of a nucleus of ice and dust