The Big Bang theory suggests that the universe began as a hot, dense point, expanding into the cosmos we observe today.

When we go backwards in time through the history of the cosmos, the distances and volumes shrink, while the average energy ...

In order to understand how physics works at a singularity like the Big Bang, we need a theory for how gravity behaves according to quantum theory. Unfortunately, we do not have one. There are a ...

Black hole formation could be a little Big Bang in reverse, coupling the matter of a dying star with dark energy, the ...

If true, this theory could explain how all of the matter in our universe was created.

In a finding that proves correct a key prediction of Einstein’s general theory of relativity ... since the dawn of time in the singularity of the Big Bang, the universe has been expanding ...

During his long career, Roger Penrose has collaborated with Stephen Hawking to uncover the secrets of the big bang, developed a quantum theory of ... the so-called singularity at the heart of ...

But quantum theory shows that the distinctions ... point - in physicist-speak, a “singularity”. At the time, when the still cooling afterglow of the Big Bang (the cosmic microwave background ...

It is still unclear why this happened or what a singularity actually is ... where has all that energy gone? The Big Bang theory predicts that as the universe expanded, it cooled.