The conclusion of DESI's first survey marks an important milestone for cosmology, which finds itself in a bind for the best ...

Two billion years after the cosmos banged into existence, a mysterious force known as dark energy began shoving space outward ...

The Dark Energy Spectroscopic Instrument (DESI) has completed its originally planned five-year mission and mapped more than 47 million galaxies and quasars, and will continue observations into 2028 ...

Only about 5% of the universe is composed of normal matter that we can directly observe, while the remaining 95% is widely ...

That light is then fed into spectrographs that split it into its component colors, allowing scientists to calculate how far ...

The universe is approaching the midpoint of its 33-billion-year lifespan, a Cornell physicist calculates with new data from dark-energy observatories. After expanding to its peak size about 11 billion ...

For more than two decades, the standard model of cosmology has stood as a reliable guide to the universe. Known as Lambda Cold Dark Matter, or ΛCDM, it weaves together dark energy, dark matter, and ...

The Dark Energy Spectroscopic Instrument (DESI) has successfully completed the largest high-resolution 3D map of the universe ...

The Dark Energy Spectroscopic Instrument has completed its five-year mission to build the most comprehensive 3D map of the ...

The universe has a hidden structure, and a University of Virginia professor is mapping it in 3D, using 46 million galaxies ...