Space

1. large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space.
5. regions of cooler temperature on the sun
6. a steady stream of high-energy, very small units of matter from the sun into space
10. the sun, the planets and their moons and other objects that orbit the sun
12. a small rocky object orbiting the sun
13. a frozen chunk of ice and dust that orbits the sun
14. the movement of one object around another object

2. scientists who study space
3. a large round object that circles around a planet
4. a path of an object in space around another object
7. the air or gases surrounding a planet
8. a large, round object in space that travels around a star
9. a fragment of space rock that enters the Earth's atmosphere
11. height above ground level
12. an imaginary line extending through Earth from the North Pole to the South Pole