Across
- 5. A satellite that is visible at night by reflection of the Sun.
- 10. When the star explodes powerfully and luminously.
- 11. The home of everything, Including all existing matters and even outer space
- 12. An area of space that has a very intense gravitational field.
- 13. An expert who studies astronomy.
- 14. A band of light that's made up of numerous faint stars.
- 15. A celestial body that moves in an orbit around the Sun.
Down
- 1. A celestial body that's made up of ice and dust.
- 2. A luminous, point light you can see at night along with other stars.
- 3. Stars that burns up completely before landing.
- 4. When two atoms collieds to form a heavier atom.
- 6. The largest star in which the earth orbits.
- 7. A small and rocky planet orbiting the sun.
- 8. The home of eight planets,the stars, the Moon,and the Sun.
- 9. A system home to billions of stars.