New research suggests that dark energy isn't needed to explain the acceleration in the expansion of the universe — instead ...

Could time itself actually explain our universe's expansion? Our current cosmological model—known as lambda cold dark matter, ...

The universe has always intrigued scientists with its vastness and mystery. Decades ago, in the 1990s, physicists began measuring the brightness of certain supernovae in innovative ways. These ...

"Up to this year, most observations were consistent, with dark energy being the cosmological constant. Nonetheless, 2024 was full of hints pointing out this might not be the case." 2024 was a big ...