Across
- 1. Finding planets by measuring a star’s wobble
- 3. Planets that orbit stars outside our solar system
- 4. Giant gas planets extremely close to their stars
- 6. Region around a star where liquid water can exist
- 8. System with seven Earth-sized planets
- 10. Studying light to identify chemicals
- 11. Distance that light travels in one year
- 12. Chemical signals that could indicate life
Down
- 2. Detecting planets by a star’s slight dimming
- 5. Rocky planets larger than Earth
- 7. A planet’s shell of gases
- 9. Life that may exist beyond Earth