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 ...

Astronomers have flagged a distant stellar object so extreme that, on paper, it should not exist. Its mass, brightness and ...

A small star named M82 X-2 breaks physical barriers, as NASA's NuSTAR confirms it shines 10 million times brighter than the ...

TU Wien researchers have uncovered a quantum twist to the paths particles take through spacetime — one that could finally ...

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

It is something like the "Holy Grail" of physics: unifying particle physics and gravitation. The world of tiny particles is described extremely well ...

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 ...

How the world of the smallest particles is structured, what is known about fundamental forces, and what particles have to do ...