What is the current theory of how our universe began? Our current model for the early universe is known as the "hot Big Bang.

The phenomenon was named Big Bang Nucleosynthesis, and it’s the only way, as far as anyone knows, that so much helium could have been formed throughout so much of the universe.

A team of scientists is proposing a bold alternative to the Big Bang theory, suggesting that our universe may have instead ...

These gravitational waves created by the Big Bang are thought to have rippled throughout reality over the mere 10^-34 seconds required to expand the universe over 100 trillion trillion times.

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.

Crucially, this bounce occurs entirely within the framework of general relativity, which applies on large scales such as ...

The Big Bang Theory explains how the universe began with an infinitely hot and dense single point that inflated to form the ever-expanding cosmos we see today.

The strongest evidence for the Big Bang came in 1964 when scientists at the Bell Labs discovered the cosmic microwave background radiation. Skip to content Introducing the all-new Astronomy.com Forum!

The notion of the Big Bang goes back nearly 100 years, when the first evidence for the expanding Universe appeared. If the Universe is expanding and cooling today, that implies a past that was smaller ...