The Big Bang Theory explains how the universe began ... This all happened within just the first second after the universe began, when the temperature of everything was still insanely hot, at ...

also known as a "theory of everything." Immeasurably hot and dense, that which would become our Universe was crammed into a volume just a tiny fraction the size of a proton. During the first picos ...

The most robust, well-supported theory as to the origins of the universe is the Big Bang Theory. A Belgian priest, Georges Lemaître, first suggested the idea of big bang theory in the 1920s. Since ...

Similarly, if we did finally have the unified theory, if we did finally have the deep laws of the universe in hand, that in a very real sense would also be a beginning. It would be the beginning ...

Hubble’s discovery was the first observational support for Georges Lemaître’s Big Bang theory of the universe, proposed in 1927. Lemaître proposed that the universe expanded explosively from an ...

Put simply, around 14 billion years ago, all matter and energy in the universe was ... This expansion was the beginning of time and continues to this day. The Big Bang theory is supported by ...

In his final lecture entitled 'The Origin of the Universe 2', Professor Bernard Lovell considers the alternative theory which science can offer on the beginning of the universe. His exploration of ...

NOVA: When you first heard of string theory ... What we all want is a better theory of the universe, to understand our physical world in greater depth than we presently do. That's why, although ...

Join six leading experts to find out everything we know about the subatomic universe. Take a deep dive into the building ...

Could time itself actually explain our universe's expansion? Our current cosmological model—known as lambda cold dark matter, ...

Physicist Alan Guth, the father of cosmic inflation theory, describes emerging ideas about where our universe comes from, what else is out there, and what caused it to exist in the first place.