Across
- 4. Group of stars
- 6. Saturn,Earth,Venus,mercury,jupiter,neptune
- 7. A collection of thousands or billions of stars
- 8. Path that a planet moves as it circles
- 9. Gases held by gravity around planets
- 10. a ball of shining gas
Down
- 1. Distance light travels in one year
- 2. all of space and time
- 3. Some planets have more than one
- 4. Icy rock that lets off gas and dust
- 5. Place where light and matter can not escape
- 7. Force that pulls objects together