Across
- 4. regions of space where the density of matter, or the curvature of spacetime, becomes infinite
- 5. the physical interaction among electric charges, magnetic moments, and the electromagnetic field
- 6. the displacement of spectral lines toward shorter wavelengths
- 8. matter that doesn’t absorb, reflect, or emit light
- 10. molecules formed by atoms consisting of antiprotons, antineutrons, and positrons
- 11. the displacement of spectral lines toward longer wavelengths
- 13. A star that fluctuates in brightness and provides astronomers with a reference they can use to measure great distances in the Universe
- 15. energy can neither be created nor destroyed, only altered in form
- 16. the amount of heat present in an object
Down
- 1. the effect whereby the position or direction of an object appears to differ when viewed from different positions
- 2. the science of the origin and development of the universe
- 3. an alternative term used to describe a time in the early Universe when space was filled with a high-temperature mix of radiation and particles
- 6. describes the expansion of the universe as the universe becoming less dense
- 7. the SI base unit of thermodynamic temperature
- 9. a pair of equal and oppositely charged or magnetized poles separated by a distance
- 12. an isolated bright or dark line in a spectrograph produced by the emission or absorption of light of a single wavelength
- 14. a region of space having a gravitational field so intense that no matter or radiation can escape