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Big Bang

Bang to Man
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Bang to Man

Imagine a microscopic point crammed with energy. It begins to expand, explosively. Some 13.7 billion years later, it has become the universe we inhabit today.

Even if such a thing happened, how would we know? It might seem impossible, but as you'll see on this page, scientists now have solid evidence for the Big Bang.

Cassiopeia Project
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How 2 Pigeons Helped Scientists Confirm the Big Bang Theory

How 2 Pigeons Helped Scientists Confirm the Big Bang Theory

For a time, these scientists suspected that pigeons were causing a strange hissing in their equipment. Then they realized the truth: They were listening to birth cries of the universe. More...

Article
Smithsonian
6 Things You May Not Know About the Afterglow of the Big Bang

6 Things You May Not Know About the Afterglow of the Big Bang

Do you like watching "The Big Bang Theory" on TV? Find an old analog TV, unhook it from cable, tune it between stations, and you can watch the Big Bang itself. More...

Article
Physics.org
Big Bang: Introduction

Big Bang: Introduction

How could the Big Bang give rise to a universe that has no edge, but isn't infinite, either. It could, says Salman Khan, if there's another dimension of space in addition to length, width and depth. More...

Video
Khan Academy
Cosmic Inflation Discovery: 5 Big Questions Answered

Cosmic Inflation Discovery: 5 Big Questions Answered

Did the universe expand faster than the speed of light when it was less than a billionth of a second old? In 2014, scientists at the South Pole found convincing evidence that it did. More...

Article
KQED
Georges Lemaitre, Father of the Big Bang

Georges Lemaitre, Father of the Big Bang

Meet Georges Lemaitre, the Belgian scientist and Catholic priest who first came up with the idea of the Big Bang. More...

Article
AMNH
Mysteries of Deep Space Timeline

Mysteries of Deep Space Timeline

You'll never find a longer timeline than this one. It goes from the Big Bang to the death of everything in the universe, trillions and trillions of years from now. More...

Interactive
PBS
Origins of the Universe: Photo Gallery

Origins of the Universe: Photo Gallery

Looking way out in space, and therefore way back in time, astronomers can see objects that formed less than a billion years after the Big Bang. At that point, the universe was still a baby. More...

Images
National Geographic
Picture of the Big Bang

Picture of the Big Bang

Light waves left over from the Big Bang reach the Earth continually, from every direction. Studying these waves may tell us why the universe looks the way it does. More...

Video
MinutePhyiscs
Tests of the Big Bang: The CMB

Tests of the Big Bang: The CMB

First, scientists predicted that space must be full of radiation left over from the Big Bang. Then they found it! Studying this radiation can tell us about the beginning of everything. More...

Article
NASA
The End of Everything

The End of Everything

Although this video is called, "The End of Everything," it spends a few fun minutes on the beginning of everything: the Big Bang. More...

Video
SciShow
The Universe and Big Bang Theory

The Universe and Big Bang Theory

Scientists believe that when the universe was a hundredth of a billionth of a trillionth of a trillionth of a second old, it expanded faster than the speed of light — to the size of a golf ball. More...

Article
Space.com
Universe 101: Big Bang Theory

Universe 101: Big Bang Theory

Cosmology is the study of the universe as a whole: its beginning, evolution, and end. Want to know more? Read on for a mental workout. More...

Article
NASA

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