Across
- 4. where stars are born
- 6. the phase after main sequence
- 9. a chart listing stars by brightness and temperature
Down
- 1. the longest wavelength
- 2. the shortest wavelength
- 3. a theory that the universe is rapidly expanding
- 5. a celestial body made of gas in space
- 7. one of the possible transformations after a giant star dies
- 8. the spectrum of all wavelengths
- 10. longer wavelengths shown in celestial bodies' radiation