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 ...

There may well be simpler, more powerful and more testable explanations for the basic properties of the universe than those ...

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

Our most powerful telescopes have revealed that the cosmos is surprisingly simple on the largest visible scales. Likewise, ...