Across
- 1. a collection of stars that is held together by gravity
- 3. a spot if darkness that appears on the suns surface
- 5. a small body of matter that enters earths atmosphere appearing as a streak of light
- 6. the distance that light travels in one year
- 7. a piece of rock or iron that has fallen from space to earths surface
Down
- 2. a small rocky object that orbits the sun
- 4. a piece of technology placed in space to gather information while orbiting the sun