Leading this quest is the Dark Energy Spectroscopic Instrument (DESI), a global collaboration that maps the universe's 3D large-scale structure by measuring redshifts of tens of millions of celestial ...

A project to map galaxies across the universe may have spied cracks in the foundation of our understanding of the cosmos.

Leading this quest is the Dark Energy Spectroscopic Instrument (DESI), a global collaboration that maps the universe's 3D large-scale structure by measuring redshifts of tens of millions of celestial ...

In recent years, one of the most troubling puzzles in astrophysics has grown more urgent. Scientists have realized that the ...

A new analysis of astronomical data suggests unknown physics is at work assisting dark energy in acting almost as ...

Measurements of the faint afterglow of the Big Bang (known as the cosmic microwave background) are also important. They do not directly measure dark energy or how it evolves, but they provide ...

But when they are combined with other experiments’ data from supernovae surveys and the cosmic microwave background, the confidence that dark energy is indeed wavering approaches 99.997 percent ...

Cosmic microwave background data support cosmology’s standard model but retain a mystery about the universe’s expansion rate.

The research team found that the statistical significance of the dynamical dark energy model has reached a 4.3σ confidence ...

The collaboration measured the polarization of light from the cosmic microwave background (CMB ... of 1,300 are the dominating vacuum energy (also called dark energy) of empty space." ...