Across
- 1. Molecule Has two opposite regions.
- 7. The universal unit for temperature.
- 8. Study of understanding the universe.
- 10. Infitily dense point of matter.
- 11. Dark lines or bright lines seen in stars.
- 12. The flow and transformation of energy.
- 13. The change in wavelengths when an object gets closer
- 16. Star Releases different amounts of light.
Down
- 2. Instrument for measuring light.
- 3. Shift in the position of an object.
- 4. Group of stars gravity-bound.
- 5. Areas with very little matter.
- 6. A measure of how hot or cold something is.
- 9. distance light travels in the universe.
- 14. The gap and interval between objects.
- 15. The measure of the duration of something.