Across
- 3. (Cosmology)The science of the origin and development of the universe.
- 5. (Temperature)A measure of the average thermal energy in an object.
- 8. (Redshift)An increase in the wavelength, and corresponding decrease in the frequency and photon energy, of electromagnetic radiation
- 9. (Singularity)A point in space where there is a mass with infinite density.
- 10. (Primeval-Fireball)Referring to an extremely early time in the universe when everything was extremely hot and extremely dense.
- 11. (Critical-Density)The density of matter that would be required to halt the expansion of the universe.
- 13. (Thermodynamics-(First-Law))Energy cannot be created nor destroyed.
- 15. (Dark-Matter)Nonluminous material that is thought to make up about 68% of the universe but we can't tell what it does.
Down
- 1. (Nuclear-Fusion)Atomic nuclei of low atomic number fuse to form a heavier nucleus with the release of energy.
- 2. (Doppler-Shift)When radiowaves are distorted due to movement.
- 4. (Light-year)How far light can travel in one year (9.461 * 10^12)
- 6. (Time)The indefinite continued progress of existence and events in the past, present, and future regarded as a whole.
- 7. (Electromagnetism)The interaction of electric currents and magnetic fields.
- 12. (Parallax)The effect where the position or direction of an object appears to differ when viewed from different positions.
- 14. (Cepheid)Stars that pulsate their brightness, temperature and size at regular intervals.