expanding universe theory

expanding universe theory

n
(Astronomy) the theory, developed from the observed red shifts of celestial bodies, that the space between galaxies is expanding, so that they appear to recede from us at velocities that increase with their distance. See also oscillating universe theory
References in periodicals archive ?
This has been interpreted as those faraway objects moving away from us at a faster speed, one of the cruxes of the expanding universe theory that has been tied to the explosive Big Bang theory that scientists believed created everything to begin with.
In contrast, in the expanding universe theory, the galactic density increases by a factor [(1 + z).sup.3] as we look back in time.
The universe is merely vast space." Rather than an expanding "entity" (per Hubble's 1929 Expanding Universe Theory) Boone describes the condition as "an ancient and perpetual steady state universe."
In the tired-light cosmology where redshifts are explained by a decay of the photon energy, the following equation replaces the cosmological redshift equation of the expanding Universe theory: