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

Category: Physics
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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 • 13 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

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

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

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What on Earth is Wrong with Gravity

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Project Greenglow: The Quest for Gravity Control

The story of an extraordinary scientific adventure - the attempt to control gravity. For centuries, the precise workings of gravity have confounded the greatest scientific minds, and the idea of controlling gravity has been seen as little more than a fanciful dream. Yet in the mid 1990s, UK defence manufacturer BAE Systems began a groundbreaking project code-named Greenglow, which set about turning science fiction into reality. On the other side of the Atlantic, Nasa was simultaneously running its own Breakthrough Propulsion Physics Project. It was concerned with potential space applications of new physics, including concepts like 'faster-than-light travel' and 'warp drives'. Horizon explores science's long-standing obsession with the idea of gravity control. It looks at recent breakthroughs in the search for loopholes in conventional physics and examines how the groundwork carried out by Project Greenglow has helped change our understanding of the universe.

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The 2,400-year search for the atom

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