According to Einstein's theory of general relativity, astronomers should see ancient cosmic events happen more slowly than modern ones.
The effect, known as time dilation, is driven by the expansion of the universe, as laid out in the scientist's fundamental exposition of gravity in 1915.Jul 3, 2023.
Time dilation as predicted by special relativity is often verified by means of particle lifetime experiments.
According to special relativity, the rate of a clock C traveling between two synchronized laboratory clocks A and B, as seen by a laboratory observer, is slowed relative to the laboratory clock rates..
This form of time dilation is also real, and it's because in Einstein's theory of general relativity, gravity can bend spacetime, and therefore time itself.
The closer the clock is to the source of gravitation, the slower time passes; the farther away the clock is from gravity, the faster time will pass..
Time Dilation Cosmology resolves all the conundrums in astrophysics and is moving us from a universe of objects moving through space, to densities in a 3-dimensional holographic spatial continuum evolving at the speed of light, c, in the forward direction of time..
Albert Einstein's 1915 theory of general relativity proposes an effect called time dilation.
This means that you would age slightly slower or faster depending on the gravitational field, an effect that can be measured with atomic clocks located at different elevations..
Consequently, time becomes stretched in a phenomenon known as time dilation: a clock running 10 billion years ago would tick at a normal rate to an observer from that time, but from the perspective of someone today, it would appear to be ticking much slower.Jul 19, 2023.
Scientists made that point anew on Monday in a study that used observations of a ferocious class of black holes called quasars to demonstrate "time dilation" in the early universe, showing how time then passed only about a fifth as quickly as it does today..
Time dilation
One of the many implications of Einstein's special relativity work is that time moves relative to the observer.
An object in motion experiences time dilation, meaning that when an object is moving very fast it experiences time more slowly than when it is at rest..
Whilst observations of cosmological supernovae unambiguously display the expected redshift-dependent time dilation, this has not been the case for other distant sources.
Furthermore, with upcoming programmes such as:
A fundamental consequence of the relativistic picture of expanding space is cosmological time dilation, where events in the distant universe appear to run slowly compared with those in the local cosmos 1, 2, 3.
The change in the frequency of photons is always connected with time dilation and with a variation of the time metric g00 in GR, similarly as for the gravitational redshift.
Therefore, the standard FLRW metric must be substituted by the conformal FLRW metric that predicts the cosmic time dilation and the cosmological redshift properly.
