A bold new theory suggests the universe didn’t begin with a single Big Bang, but instead unfolds through a series of ultra-fast, invisible bursts called “temporal singularities.” These fleeting events ...

Forget one Big Bang — try many. A bold new theory pokes holes in the popular origin story, suggesting the universe evolves ...

After the initial inflation of the Big Bang, the expansion of the universe began to gradually slow down, which allowed galaxies and stars to form. “Dark energy couldn't have become the dominant thing ...

A new idea about cosmic expansion has emerged that might remove the need for dark matter and dark energy altogether.

In computer simulations of our galaxy ... film of the expansion and the universe would eventually reach a state of infinite density and energy—what astronomers call the Big Bang.

He deduced that if Einstein's theory were true (and there had been good evidence for it since 1919), it meant the universe must be expanding ... named his theory "big bang." ...

Such was the force of that expansion that maybe there is evidence of that tremendous energy that we can ... was like just after the Big Bang? By observing how galaxies are moving away from us ...

A new theory challenges the standard model of cosmology, arguing that dark matter and dark energy are not the forces behind ...