Earth and Space

3. scientific study of stars & planets
5. the sun and everything that orbits around it
8. when a planet or moon travels around the body it is orbiting one time
9. everything that exists in space
10. an invisible line around which an object rotates or spins
11. when a planet or moon turns all the way around or spins on its axis at one time
12. the measure of how much energy or light a star shines from its surface
14. the galaxy we live in
15. the path an object follows around another object

1. a large, round object in space that DOES NOT give off light and that orbits a star.
2. a large group of stars and planets held together by gravity
4. a cluster of stars in the sky that are grouped together in a particular pattern or shape & have been given a name.
6. a ball of burning gas in space that gives off light
7. the star that the Earth orbits around giving it heat,light,and energy
13. the dark area created by an object that stops light