The X‑arithmetic technique offers a powerful new way to map the physics of other galactic structures across the universe and ...

If the universe is 13.8 billion years old, why is the observable universe 46 billion light-years across? This video explains the mind-bending science behind the accelerated expansion of space and why ...

In a glimpse of the early universe, astronomers have observed a galaxy as it appeared just 800 million years after the Big ...

Physics World is delighted to announce its Top 10 Breakthroughs of the Year for 2025, which includes research in astronomy, ...

The Hubble tension is especially troubling because it involves two sets of measurements that offer conflicting views of the ...

This video walks you all the way to the last pages of reality, exploring what modern physics says about how the universe ...

New measurements using gravitational lensing suggest the universe’s current expansion rate does not agree with signals from ...

The longest gamma-ray burst ever observed has UNC Chapel Hill astronomers questioning the very nature of these cosmic ...

Three thought experiments involving “demons” have haunted physics for centuries. What should we make of them today?

From a particle smasher encircling the moon to an “impossible” laser, five scientists reveal the experiments they would run ...

Galaxy clusters are the most massive objects in the universe held together by gravity, containing up to several thousand ...

Current physics is speeding toward a breaking point, as astronomers confirm that the Hubble tension in new data.