How did everything begin? It's a question that humans have pondered for thousands of years. Over the last century or so, ...

For one, scientists observe a "cosmic fossil" called the cosmic microwave background (CMB). The first light that was free to ...

Physicists used ultracold cesium atoms in a vacuum chamber to simulate the evolution of the early universe.

These factors also shed light on early conditions after the Big Bang, such as the opacity of the early universe and the distribution of mass.

The Big Bang is our modern understanding of the history and evolution of the universe. It is not, however, a theory of the creation of our cosmos.

It all started with a big bang has been the commonly accepted origin story of our universe for decades. But what if it’s wrong? What if, before starting 13 billion years ago as a tiny ball of ...

Scientists are looking into the Dark Big Bang, a second event that sent dark matter particles out into the universe., and we may be able to find evidence of it.

At this stage in the evolution of the universe (about 14 billion years after the big bang) there are four fundamental forces in action that cause interactions among the constituents of matter.

A study published this week in an astronomical journal suggests our universe could be 26.7 billion years old, or about twice as old as we thought.

The first life-forms capable of evolution could have appeared just moments after the Big Bang, a physicist explains.