The world of space(:

1. A _______ is a star that suddenly increases greatly in brightness because of a catastrophic explosion that ejects most of its mass
4. A ________ is a meteor that survives its passage through the earths atmosphere
7. The sun is ___________ miles away from the earth
8. The ________ has 8 planets and 1 star
11. A large collection of stars is called a ________
12. A _______ is a cloud of gas and dust in outer space
16. You look through a _________ to see stars
17. ________ makes things fall towards the earth
18. A _________ is a solid piece of debris from an object such as a comet asteroid or meteoroid
20. The galaxy that we live in is called the ________
21. _______ is a moon of jupiter,the first two letters are eu
22. A __________ is a rock that orbits the sun

2. _________ is a branch in space science,it explains the birth,life and death of stars,planets,galaxies,and other objects in the universe
3. A _______ is where you can go and see images stars in a domed shaped ceiling
5. A _________ is a biological community of interacting organisms and their physical environment
6. _________ is the meaning to figure out something
9. An _________ is an expert on astronomy
10. _________ is were you train to be an Astronaut
13. The ________ is how the universe started
14. A _______ is consisting of ice and dust,and when near the sun a tail of gas is behind it
15. A ________ is a region of space having a gravitational field so intense that nothing can escape
19. _________ is 75% mass of the universe and it starts with the letter h