The cosmic microwave background is the faint residual light from the very beginnings of the universe. It’s often referred to as the afterglow of the Big Bang. At over 13 billion years old, it is the ...

These ten baffling cosmic puzzles highlight astronomical measurements that cannot yet be fully explained by standard physics ...

The universe stretches before us like an infinite ocean of darkness punctuated by brilliant stars, swirling galaxies, and phenomena that defy our understanding. Despite centuries of scientific ...

Add Yahoo as a preferred source to see more of our stories on Google. A cosmic glitch in gravity may make gravity about 1% weaker across billions of light-years, challenging Einstein's theory at vast ...

A group of researchers at the University of Waterloo and the University of British Columbia have discovered a potential "cosmic glitch" in the universe's gravity, explaining its strange behavior on a ...

In other words, Earth's birth appeared to depend on an event that was possible, but extremely rare. As a researcher working on supernova physics and cosmic rays, this explanation felt incomplete.

Mathematicians have uncovered what they argue is a fundamental flaw in the standard model of the universe, potentially challenging the need for dark energy. Their calculations suggest that the ...

The analysis showed that if one assumes that dark matter has a very small pressure during cosmic expansion, so that its ...

The deepest mysteries of the universe often begin with the biggest questions. Few are more puzzling than the birth of supermassive black holes. These giants, weighing millions to billions of times ...