Across
- 4. Emitted from stars.
- 6. Travel of a moon around its planet.
- 7. Decribes the orbit of a satellite that remains in the same place above the Earth.
- 10. A birthplace for stars.
- 11. Shape of a satellite orbit.
- 13. Before a star is fully formed.
Down
- 1. Fuel for a star.
- 2. The force due to mass.
- 3. The property of a star that determines its life cycle.
- 5. Light-year measures this cosmic property.
- 8. When a red supergiant suffers gravitational collapse.
- 9. The process occuring in the core of a main sequence star.
- 12. Ours is called the Milky Way.