Across
- 3. a group of stars and gas
- 5. super bright explosion of a star
- 6. eruptions in the outer part of the Sun's atmosphere
- 9. a group or cluster of stars that are named after people or things
- 11. the remnants of a dead star
Down
- 1. the theory that describes the early development of the universe
- 2. Roman name for Zeus, a planet
- 4. "the dangerous donut"
- 7. when one object circles another
- 8. when our view of one object is blocked by either another object or by the Earth's shadow
- 9. the largest known astroid
- 10. a cloud of gas and dust