In the leading model of cosmology, most of the universe is invisible: a combined 95% is made of dark matter and dark energy.

A cosmological simulation study by researchers from the Shanghai Astronomical Observatory of the Chinese Academy of Sciences has systematically revealed, for the first time, how the interaction ...

A new study casts doubt on the universe’s accelerating expansion, suggesting dark energy might be weakening over time.

Nearly a century after astronomers first proposed dark matter to explain the strange motions of galaxies, scientists may finally be catching a glimpse of it. A University of Tokyo researcher analyzing ...

The cosmos might be playing a different game than we thought. Scientists have spent decades believing our universe was ...

The mysterious force called Dark Energy, which helps the Universe to expand, might be changing in a way that challenges our ...

NASA has completed assembly of the Nancy Grace Roman Space Telescope, moving the mission into critical testing before its ...

A new theory claims dark matter and dark energy don’t exist — they’re just side effects of the universe’s changing forces. By rethinking gravity and cosmic timelines, it could rewrite our ...

“If this is correct, to the extent of my knowledge, it would mark the first time humanity has ‘seen’ dark matter. And it ...

For a quarter century, cosmology has leaned on one framework to explain how the universe expands. Known as the ΛCDM model, it assumes about 70 percent of the cosmos is filled with an unseen force ...