Across
- 2. Nearest star to Earth after the Sun
- 5. International space research laboratory in orbit
- 6. Force that keeps planets in orbit
- 10. Giant explosion marking a star’s death
- 11. Small icy body developing a tail near the Sun
- 12. Protective clothing worn by astronauts
- 14. Moon of Jupiter with icy surface
- 15. The hottest planet in the Solar System
Down
- 1. Giant planet with a Great Red Spot
- 3. First human to walk on the Moon
- 4. The study of stars and space
- 7. Mars rover that landed in 2021
- 8. The planet known as the “Red Planet”
- 9. Path an object takes around another
- 13. First artificial Earth satellite (1957)