Across
- 4. The galaxy that includes our solar system
- 6. Occurs when two nuclei combine to form a new nucleus
- 8. Based on the temperature of the star
- 9. A cloud of gas and dust in outer space
- 10. All space and time and their contents
Down
- 1. A scatter plot of stars showing the relationship between stars' luminosity and temperature
- 2. Brightness
- 3. Having a flat circular shape
- 5. A change in the identity or characteristics of an atomic nucleus
- 7. A system of millions or billions of stars