| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024expand′ing u′niverse, [Astron.]- Astronomya representation of the universe, based on the observed redshifts of distant galaxies, in which the galaxies are assumed to be receding from each other at a speed proportional to their separation as a result of the expansion of the universe. Cf. Hubble's constant, cosmological redshift.
|