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Thus, an accelerating universe took a longer time to expand from 2/3 to 1 times its present size, compared to a non-accelerating universe with constant ˙ and the same present-day value of the Hubble constant. This results in a larger light-travel time, larger distance and fainter supernovae, which corresponds to the actual observations.
The expansion of the universe is the increase in distance between gravitationally unbound parts of the observable universe with time. [1] It is an intrinsic expansion, so it does not mean that the universe expands "into" anything or that space exists "outside" it.
The cosmological principle, that the universe is the same everywhere and in all directions, and that it is expanding, A postulate by Hermann Weyl that the lines of spacetime intersect at only one point, where time along each line can be synchronized; the behavior resembles an expanding fluid, [3]: 175
The player can restart in a parallel universe "next door" or a simulated universe "within". In the version of the game for mobile devices, some universes contain artifacts that give bonuses to different aspects of the game, though players must complete the entire game again to retain the artifact in subsequent playthroughs.
The mathematical derivation of an idealized Hubble's law for a uniformly expanding universe is a fairly elementary theorem of geometry in 3-dimensional Cartesian/Newtonian coordinate space, which, considered as a metric space, is entirely homogeneous and isotropic (properties do not vary with location or direction). Simply stated, the theorem ...
A twin universe could be exerting its gravity on ours, messing up our cosmic calculations.
The observations stretch back to about 12.3 billion years ago, when the universe was roughly a tenth Ferocious black holes reveal 'time dilation' in early universe Skip to main content
In physical cosmology, the Big Rip is a hypothetical cosmological model concerning the ultimate fate of the universe, in which the matter of the universe, from stars and galaxies to atoms and subatomic particles, and even spacetime itself, is progressively torn apart by the expansion of the universe at a certain time in the future, until distances between particles will infinitely increase.