Across
- 2. The closest star to Earth
- 6. The farthest known planet from the Sun
- 8. The common fuel of stars
- 9. Massive clouds of dust and gas which stars can form
- 10. An object that orbits planets
- 11. The force that balance out the gas pressure in stars
Down
- 1. The reaction that stars perform to create energy
- 3. A system of millions or billions of stars
- 4. What is temperature plot against in a HR diagram?
- 5. Most stars are in a stage called the main _____
- 7. The elliptical path of an object around a point in space
- 12. Second brightest object in the night sky