A research team from the Yunnan Observatories of the Chinese Academy of Sciences (CAS), in collaboration with other researchers, has developed a new method to estimate how stellar-mass compact objects ...

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

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

Scientists are testing a novel way to measure cosmic expansion using time delays in gravitationally lensed quasars. Their ...

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

In the end, the Universe becomes a place where gravity and quantum physics slowly turn all mass into faint streams of particles.

"This observation also demonstrates that we can use Webb to find individual stars when the universe was only 5% of its ...

Physicists have chased a unified description of nature for more than a century, yet quantum theory and gravity have ...

This study shows that the universe itself can push the boundaries of physics in ways laboratory tests cannot. By ruling out ...

Four UC Nobel laureates on what they discovered here, why it matters, and why their world-changing work could only have ...

“Our latest discovery helps solve a 20-year cosmic mystery,” co-lead author Daniel Whalen from the University of Portsmouth's ...

Lurking further from its stars than Neptune is from the Sun, this is no inner planet, but it’s on a scale we recognize, ...