One could argue that cosmologists had made little progress in our understanding of these basic facts since the discovery of the cosmic microwave background (CMB), the afterglow of the Big Bang, in the ...

A group of researchers from Spain, for example, claims that they have a stunning 4.1-σ preference for a time-dependent cosmological constant over an actually constant one.

Its first BAO results are intriguing – the data alone is still consistent with a cosmological constant, but with hints of a possible time-varying dark energy when combined with other data sources.

The combined data were better fit with a model with omega -1 and in which dark energy is getting weaker over time. And that’s the case whether the CMB or supernova results were added to DESI ...

DESI plans to continue collecting data through 2026, aiming to map over 50 million galaxies and quasars and potentially push the evolving dark energy signal beyond the 5-sigma discovery threshold.

Fine structure constant may vary with space, constant in time Researchers extend direct fine structure measurements, confirm spatial variation. Chris Lee – Apr 28, 2020 1:35 pm | 83 ...

Last year's results were based on analysis of a full year's worth of data taken from seven different slices of cosmic time and include 450,000 quasars, the largest ever collected, with a record ...

But it isn't actually a constant at all, as it changes over time. Here's the science behind why. ... Ned Wright, based on the latest data from Betoule et al. (2014) ...

However, this pair of methods has produced two different results for the value of the Hubble constant. Data from the CMB suggests that the universe is expanding at the rate of about 41.9 miles (67 ...