For decades, cosmologists have had an awkward number sitting at the center of their equations. The universe is expanding, and ...

Physicists at Brown University suggest that the universe’s topology could explain why the cosmological constant — the energy driving cosmic acceleration — is far smaller than quantum theory predicts.

The cosmological constant is the mathematical description of the energy that drives the ever-accelerating expansion of the ...

Cosmologists have spent decades trying to pin down exactly how fast the universe is flying apart and whether that rate is ...

The long-standing problem of the cosmological constant, described both as “the worst prediction in the history of physics” and by Einstein as his “biggest blunder”, is being tackled with renewed ...

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 ...

The going theory among cosmologists is that the universe will eventually rip itself to shreds owing to its ever-accelerating rate of expansion. Not so, say a pair of physicists who have just taken it ...

The far distant fates of the Universe offer a number of possibilities, but if dark energy is truly a constant, as the data indicates, it will continue to follow the red curve, leading to the long-term ...