Across
- 3. the study of the relations between heat, work, temperature, and energy.
- 5. a huge collection of gas, dust, and billions of stars and their solar systems
- 7. SI base unit of thermodynamic temperature
- 8. the interaction of electric currents or fields and magnetic fields.
- 9. the indefinite continued progress of existence and events regarded as a whole.
- 11. the displacement of spectral lines toward longer wavelengths
- 12. the difference in direction of a celestial object as seen by an observer from two widely separated points
- 13. 9.4607 × 1012 km
- 15. the science of the origin of the earth
Down
- 1. substance composed of subatomic particles that have the composition of ordinary matter but the magnetic charge is different
- 2. the degree or intensity of heat present in a substance or object
- 4. the displacement of the spectrum of an approaching celestial body toward shorter wavelengths
- 6. a molecule in which a concentration of positive electric charge is separated from a concentration of negative charge.
- 10. a point at which a function takes an infinite value, especially in space-time when matter is infinitely dense, as at the center of a black hole
- 14. a completely empty space