Across
- 4. Horizon, The visible part of a black hole (5,7)
- 6. Smallest Galilean moon, also known as Jupiter II (6)
- 7. the founder of SpaceX (4)
- 8. an object so dense that even light can't escape it (9)
- 9. the US government space agency (4)
- 12. Likes to chase mice
- 13. light particle (6)
- 14. Has a trunk
- 16. The largest black hole ever discovered (7)
- 19. The most important resource needed to live on another planet (5)
- 21. Large marsupial
- 23. Mars 2021 rover (12)
Down
- 1. the namesake and discoverer of the 2nd asteroid field (6)
- 2. Saturns largest moon (5)
- 3. Mars dirt (7)
- 5. The company that helps fund SpaceX (5)
- 10. junk objects left behind by space missions and are left floating in orbit (5,4)
- 11. Man's best friend
- 13. X, Theoretical planet on the edge of the solar system (6,1)
- 15. NASA's rival (6)
- 16. Planet like satellite (4)
- 17. A, The Blackhole at the centre of the universe (11,1)
- 18. Flying mammal
- 20. Matter, The hypothetical substance that holds the universe together (4,6)
- 22. the red planet (4)