Across
- 4. How much energy a celestial object radiates per second
- 8. A part of space where gravity pulls so much that no matters or radiation can escape
- 10. A giant cloud in space made out of gas and dust
- 14. These starts are created when massive stars loose their fuel and colapse
- 16. An instrument created to see something from afar
Down
- 1. A surface layer of light of a star
- 2. A system of billions of stars,gas,and dust, held together by gravity
- 3. A theory of how the universe was created
- 5. The natural satellite of the earth, visible at night
- 6. The explosion of the star
- 7. The unit that is used to measure the distance of a planet from the sun
- 9. Something that relates to the position or motion of the moon
- 11. The planet we live in
- 12. The biggest planet in the solar system
- 13. A vehicle that gets shot to space with a special engine
- 15. The hottest planet in the solar system