Physicists are scrambling to understand why dark energy is weakening. In a surprising twist, we must now reconsider the ...

About 13.8 billion years ago, the origin of the universe began with the Big Bang. Scientists say all space, time, matter, and ...

Drawing together leading experts from across the field, an international collaboration of cosmologists has created a unified approach for measuring the value of the Hubble constant. Published in ...

Last year, our most detailed map of the universe yet suggested our understanding of dark energy has been wrong for decades. The shock result is reigniting the search for a better cosmic story ...

Scientists propose a gravitational-wave method called the stochastic standard siren to measure the Hubble constant, offering an independent way to examine the universe’s expansion and the Hubble ...

Ripples in the fabric of space-time called gravitational waves may be the key to solving the Hubble tension — one of the biggest nagging problems in physics.

We have known for several decades that the universe is expanding. Scientists use multiple techniques to measure the present-day expansion rate of the universe, known as the Hubble constant. These ...

The oldest stars in the Milky Way are forcing a fresh look at one of cosmology’s biggest arguments. If some of them are about ...

The catalogue of all the new 128 events observed by LIGO, Virgo and KAGRA from May 2023 to January 2024 is being published. It reveals an even greater variety of binary pairs producing gravitational ...

Exceptionalism is not confined to any one religion, culture, or political system. It is an anthropological constant.

What if the Universe were not symmetrical? This idea, which goes against what scientists have long believed, emerges from new studies on large cosmic structures. Instead of being uniform in ...

The international network of gravitational wave detectors LIGO in the United States, Virgo in Italy and KAGRA in Japan (LVK) announced the publication ...