Astronomy

3. How bright a start is from standard distance of 32.6 light-years
4. A force that pulls objects toward each other
5. An event during which the moon passes directly behind Earth and into its shadow
10. All of the existing matter and energy in space
11. A collection of stars, their solar systems, dust, and gas
12. System A system of objects in space that includes at least one star, planets, their moons, asteroids, comets, and other space debris
14. How bright a star appears compared with other stars when all are viewed from Earth.

1. A stage in the repeating predicable pattern of change in the moon's appearance from Earth
2. An event during which the moon's shadow blocks all or some of the sun's light from reaching Earth
6. A space object that gives off its own heat and light
7. a group of stars that forms a recognizable pattern in the sky
8. An imaginary line through the center of an object that is a fixed point of reference
9. The distance that light travels in one Earth year
13. The oval shaped pattern an object follows as it revolves around another object in space