Across
- 2. The electromagnetic wave with the shortest wavelength.
- 4. The name of our galaxy.
- 5. The name of the space telescope launched in 1990.
- 8. One of the last stages of a star's life.
- 9. A chance alignment of stars.
- 10. The brightest star in our known universe.
Down
- 1. What a star's brightness is called.
- 3. An invisible force that is the opposite of dark energy.
- 6. The color of the hottest stars.
- 7. A planet in our solar system that was discovered in 1781.