Across
- 3. huge volumes of space between superclusters that appear to contain very little matter
- 4. Extremely high frequency radiation that filled space immediately following the Big Bang
- 6. matter that does not give off electromagnetic radiation but is quite abundant in the universe
- 9. An object in space whose gravity is so strong not even light can escape.
- 11. A slightly unstable star that has a regular variation in brightness and luminosity due to a periodic expansion and contraction in its outer layers.
- 13. shift of light to a longer wavelength as it moves away
- 14. An apparent shift in the position of an object when viewed from different locations
Down
- 1. study of the universe
- 2. The theory that the universe originated in a huge explosion that released all matter and energy.
- 5. proposes a period of extremely rapid expansion of the universe during its first few moments
- 7. A huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity
- 8. SI unit for temperature
- 10. a continuous area or expanse which is free, available, or unoccupied
- 12. created by equal but opposite charges that are separated by a short distance