Is There a Shadow Universe? • episode "S5E10" Through the Wormhole

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It appears we live in a universe filled with light. But scientists are now certain there is far more matter in the dark portions of our universe.

Through the Wormhole • 0 • 18 episodes •

When Did Time Begin

We float along the river of time. But does that river have a source? Where did time come from? Some believe time and space are one thing, and the Big Bang started the cosmic clock. Others believe the universe existed for almost half a million "years" before light could move and time began. Still others say time is older than our universe. But what if time itself is an illusion? Incredible new experiments may hold the answer. One groundbreaking experiment gives us the power to punch holes in time…and another may create a machine that operates outside time’s boundaries!

Physics

Is Gravity an Illusion

We feel it every moment of our lives but for physicists, gravity is the longest running unsolved mystery of the universe. Why do all objects that have mass pull on one another? Cutting-edge theories are proposing unexpected answers.

Physics

Will We Become God?

Humanity’s potential seems limitless. But could we become as powerful as God?

Science

Is There a Shadow Universe?

It appears we live in a universe filled with light. But scientists are now certain there is far more matter in the dark portions of our universe.

Physics

Can We Survive the Death of the Sun?

We are all at the mercy of the Sun. Its glowing disc sustains nearly all life on Earth. But the Sun also holds a dark secret: someday, our aging, expanding star will bathe the Earth in a fiery holocaust. Everything we know will turn to hot, bubbling, plasma.

Science

Can We Travel Faster than Light?

It's called the speed limit of the universe. Einstein blew all of our minds when he worked out the Theory of Relativity, and showed that space and time were malleable substances. He also theorized that we as humans can never travel faster than the speed of light, which leaves the stars and other galaxies almost impossibly out of our reach. But the dreams of Star Wars and Star Trek are not dead. In fact, there could be ways to travel faster than the speed of light - and some of them are already being tested in labs around the world.

Physics

Is Reality Real?

Do we live in the "real world" or is it all in our mind? Our perception of reality is controlled by society. Thanks to "the optimism bias", we make unrealistic assessments about our own reality. Human senses capture only a small part of nature.

Science

How to Collapse a Superpower

The dangers of nations being dependent on digital devices and global interactivity are examined.

Technology

Is Luck Real?

Do you make your own luck or does luck make you? We find luck, good and bad, in casinos, basketball courts, genetics labs and the subatomic world. It's a journey that will radically revise your understanding of the laws of nature and the human brain.

Science

How Does the Universe Work?

Quantum theory, the best explanation of how atoms and anything smaller behave, is so weird even scientists who have mastered it find it baffling. But bit by bit scientists are finding maybe it's not so weird as comparable behavior is discovered in our every day world. It's just that no one noticed before.

Astronomy

Will Sex Become Extinct?

Every single person who has ever lived was created from the genes of one man and one woman. But human sexual reproduction, unchanged for millions of years, is about to undergo radical change.

Nature

When Does Life Begin?

We can all trace our lives back to a beginning. But what defines the beginning? Is it the moment when two cells unite? Or does something have to know it is alive before its life can begin?

Nature

Can Our Minds Be Hacked?

Our minds store our entire lives, our memories and our deepest desires. Tell no one, and our thoughts remain our own. But our brains are biological computers. Computer hackers can tamper with our email. Could brain hackers someday be able to rewrite our thoughts?

Brain

Why Do We Lie?

Do you sometimes tell a lie? Why? Is it human nature to lie?

People

Do We Live in the Matrix?

Our universe seems real. But what if it’s a videogame? Scientists in a variety of fields are taking seriously the possibility that we live in a virtual reality. Maybe the Big Bang was just the moment someone flipped the switch and turned on our universe. Maybe what looks random has already been programmed to happen. If some advanced civilization did design and program our universe, would we ever know? Scientists are looking for glitches in the laws of the universe that may uncover its hidden code.

Creativity

Is The Force With us?

New research is beginning to reveal a hidden force in the universe - one that penetrates space with trillions of invisible connections, instantly linking every place in our world and joining our future with our past. Is the Force with us?

2017 • Science

Can We Cheat Death?

Death is life's greatest certainty. But that may be about to change. Scientists have discovered an immortal animal that may hold the secret of endless regeneration. They're on the brink of editing our DNA so that we can cure death like a disease. Or is dying necessary for the survival of our species?

2017 • Science

Is gun Crime a Virus?

Every 17 minutes in America, someone is killed with a gun. Politicians can't seem to stop the violence. But epidemiologists, psychologists and big data crunchers are discovering that gun crime spreads like a virus -and science may be able to stop its spread.

2017 • Science

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Is Everything We Know About the Universe Wrong?

There is something very strange happens in space – something that should not be possible. It’s as if large parts of the world are being ravaged by a huge and invisible celestial vacuum. Sasha Kaslinsky, the scientist who discovered the phenomenon, is understandably nervous: “We left very upset and nervous,” he says, “because this is not something we planned to find.”

Physics

The Story of Everything

In two mind-blowing hours, Hawking reveals the wonders of the cosmos to a new generation.

1997 • Stephen Hawking's UniversePhysics

Beyond the Rainbow

Helen Czerski ventures beyond the visible spectrum in the final (and best) episode in this vibrant little series, showing how electromagnetic radiation is so much broader than the narrow slice of reality we see with our eyes. Before delving into the details of UV, infrared and x-rays, Dr Czerski explores colour subjectivity by trying on a dress that recently divided the internet — to some it appeared blue and black, to others white and gold. It's a perfect fit. It's also a neat analogy of how people can have opposing views but both swear blind that their perspective is correct. The series ends with some amazing imaging techniques that show our bodies in a whole new light.

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The Mystery of Dark Energy

Horizon looks at dark energy - the mysterious force that is unexpectedly causing the universe's expansion to speed up. The effects of dark energy were discovered in 1998 but physicists still don't know what it is. Worse, its very existence calls into question Albert Einstein's general theory of relativity - the cornerstone of modern physics. The hunt for the identity of dark energy is on. Experiments on earth and in space generate data that might provide a clue, but there are also hopes that another Einstein might emerge - someone who can write a new theory explaining the mystery of the dark energy.

2016 • HorizonPhysics

The Story of Information

Professor Jim Al-Khalili discovers the intriguing story of how we discovered the rules that drive the universe. (Part 2: The Story of Information) Professor Jim Al-Khalili investigates one of the most important concepts in the world today - information. He discovers how we harnessed the power of symbols, everything from the first alphabet to the electric telegraph through to the modern digital age. But on this journey he learns that information isn't just about human communication, it's woven very profoundly into the fabric of reality.

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Colours of Life

Early Earth was a canvas for the vast new palette of the colours of life, with the diversity of human skin tones telling the story of how humanity spread and ultimately conquered the planet. Dr Helen Czerski explores the true masters of colour - which are often the smallest and most elusive - travelling to the mountains of Tennessee to witness the colourful mating display of fireflies, and revealing the marine creatures that can change the colour of their skin in order to hide from the world.

2015 • Colour: The Spectrum of SciencePhysics