Jessica's Fabulous Science Crossword Puzzle :)

5. A group of billions of stars, objects that orbit those stars, gas and dust.
6. To spin around on an axis.
8. A large, round, body that revolves around a star.
9. Irregular band of light that stretches completely around the celestial sphere.
12. Planets that are mostly made up of gas and dust and don’t have a solid surface, usually are large in size.
16. A machine sent into space to take pictures and collect information and send it back to earth.
17. Rock and iron objects that orbit the sun.
18. A huge ball of very hot, glowing gasses in space that produces its own light and heat.
19. Everything that exists including galaxies and everything in them.
20. The earth’s natural satellite that shines by the sun’s reflective light.

1. Round bodies whose orbits cross the orbit of other bodies.
2. A circular path around another body in space.
3. A chunk of frozen gasses, rock, ice and dust.
4. Emptiness of space.
7. A star that the earth and other planets revolve, from which they receive heat and light and is made of hydrogen and helium.
10. The force with which a body is attracted toward the earth by gravitation.
11. Planets that are very dense and rocky, usually small in size.
13. Made up of a star; all the planets and other space objects revolve around them.
14. The study of objects in space and their properties.
15. A region beyond earth’s atmosphere or beyond the solar system.