Space

2. Small planet-like object not officially called a planet
3. Explosion from a dying star
6. Flying asteroid like object made mostly of ice
11. What caused the dinosaurs to die out
12. What Earth is
13. Massive object created from dead stars that has the most powerful gravity
14. What is in the center of our solar system
15. What Jupiter, Earth, and Venus is part of
17. Largest planet in our solar system
20. The most powerful class of radiation

1. Space cryptids
2. Hidden matter in space
4. A collection of stars that show something, normally from myths
5. Massive expanse of matter that stars are born in
7. Person whose job is to go into space
8. Rocket that carries people
9. Massive objects circling suns in deep space
10. Human made object flying around in space that provides internet to remote areas
16. what our galaxy is named
18. The red planet
19. A massive collection of objects