Space Vocab

2. a huge group of single stars, star systems, star clusters, dust and gas.
4. a chunk of rock or dust in space smaller than an asteroid.
6. the system consisting of the sun and planets and other objects that revolve around it.
7. a unit of distance equal to the average distance between the earth and the sun.
9. a ball of hot gas, primarily hydrogen and helium.
10. electromagnetic radiation that can be seen with the unaided eye.
13. the initial explosion that resulted in the formation and expansion of the universe.
14. on of the rocky objects revolving around the sun that is too small and numerous to be considered a planet.
15. an object that orbits a star
17. a natural satellite that orbits a planet
19. the range of wavelengths of electromagnetic waves.

1. the enery transferred through space by electromagnetic waves.
3. an optical instrument tha forms enlarged images of distant objects.
5. an object that orbits a planet
8. all of space and everything in it.
11. the distance that light travels in one year.
12. the distance between two corresponding parts of a wave.
16. a loose collection of ice and dust that orbits the sun typically in a log narrow orbit.
18. the abbreviation of astronomical unit
19. a large gaseous body at the center of the solar sytem