Dark energy may be the most mysterious substance ever proposed, but many scientists are certain it exists. Why?

The universe may be asymmetric, not identical in all directions The cosmic dipole anomaly challenges the standard Lambda-CDM ...

Just 1.4 billion years after the Big Bang, astronomers have identified a galaxy cluster “atmosphere” that appears far too hot ...

The galaxy cluster appears hotter and more mature than it should for its young age, challenging what we think we know about ...

Scientists are a step closer to solving one of the universe's biggest mysteries as new research finds evidence that two of ...

Scientists are a step closer to solving one of the universe’s biggest mysteries as new research finds evidence that two of ...

Cosmologists are increasingly entertaining a radical possibility: that the cosmos might fold back on itself so that, on the ...

New research from the University of Sheffield provides compelling evidence that dark matter and neutrinos may interact, challenging the long-standing ...

New research suggests the universe may be lopsided. Cosmic microwave background and galaxy data hint at directional differences, challenging cosmology’s assumption of uniformity and standard ...

An anomalous galaxy cluster, with temperatures far above what should be possible, is causing astronomers to reconsider the ...

Scientists used Cosmic Microwave Background data to challenge our understanding of the universe's shape. Here's what they ...

New research puts forward compelling new evidence that dark matter interacts with cosmic "ghost particles" called neutrinos.