NOVA Home Find out what's coming up on air Listing of previous NOVA Web sites NOVA's history Subscribe to the NOVA bulletin Lesson plans and more for teachers NOVA RSS feeds Tell us what you think Program transcripts Buy NOVA videos or DVDs Watch NOVA programs online Answers to frequently asked questions

Watch The Elegant Universe (3 hours)


The Elegant Universe homepage

To view any part of this three-hour miniseries, choose an episode from one of the three columns below and select either QuickTime (full-screen option available) or RealVideo to begin. If you experience difficulty viewing, it may be due to high demand. We regret this, and suggest you try back at another time. Note that NOVA programs are not available for downloading due to rights restrictions.

Technical Help | Feedback | Program Credits | Program Transcripts | For Teachers

HOUR 1: Einstein's Dream HOUR 2: String's the Thing HOUR 3: Welcome to the 11th Dimension
A Theory of Everything? A Theory of Everything?

watch chapter 1 in
QuickTime
RealVideo

Today, Einstein's goal of combining the physical laws of the universe in one theory that explains it all is the Holy Grail of modern physics.
running time 6:21

Two Conflicting Sets of Laws Two Conflicting Sets of Laws

watch chapter 1 in
QuickTime
RealVideo

In order to solve some of the deepest mysteries of the universe, the rules that govern large objects like galaxies must be combined with the rules that govern small objects like subatomic particles.
running time 8:26

The Wild West of Physics The Wild West of Physics

watch chapter 1 in
QuickTime
RealVideo

String theory is radically changing our ideas about the nature of space, opening up the possibility that extra dimensions, rips in the fabric of space, and parallel universes actually exist.
running time 10:02

Newton's Embarrassing Secret Newton's Embarrassing Secret

watch chapter 2 in
QuickTime
RealVideo

Although Newton discovered the law of gravity nearly 300 years ago, until Einstein came along, scientists had no idea how gravity actually worked.
running time 6:04

One Master Equation One Master Equation

watch chapter 2 in
QuickTime
RealVideo

Many physicists now believe that strings—miniscule vibrating strands of energy thought to make up all matter—hold the key to uniting the world of the large and the world of the small in a single theory.
running time 4:40

The Potential of Strings The Potential of Strings

watch chapter 2 in
QuickTime
RealVideo

Strings provide a unified framework for viewing the universe, but for a while, confusingly, there were five different versions of string theory.
running time 4:09

A New Picture of Gravity A New Picture of Gravity

watch chapter 3 in
QuickTime
RealVideo

Einstein's success in explaining gravity as warps and curves in the fabric of space and time set him on a quest to unify gravity with electricity and magnetism.
running time 7:11

The Birth of String Theory The Birth of String Theory

watch chapter 3 in
QuickTime
RealVideo

In the 1960s, physicists caught a glimpse of what appeared to be strange, string-like objects hidden beneath the abstract symbols of a 200-year-old equation.
running time 4:12

Getting to One Theory Getting to One Theory

watch chapter 3 in
QuickTime
RealVideo

What physicists thought were five different theories turned out to be five different ways of looking at the same thing. String theory was unified at last.
running time 5:21

A Strange New World A Strange New World

watch chapter 4 in
QuickTime
RealVideo

As Einstein struggled to unite the weak force of gravity with the much stronger force of electromagnetism, physics moved on, examining the bizarre way tiny bits of matter interact with one another inside the atom.
running time 4:30

The Standard Model The Standard Model

watch chapter 4 in
QuickTime
RealVideo

Meanwhile, mainstream science was embracing particles as points, not strings, and the Standard Model was born, uniting the strong force, the weak force, and electromagnetism.
running time 6:36

Parallel Universes Parallel Universes

watch chapter 4 in
QuickTime
RealVideo

The extra dimension of space required to unify string theory suggests that we may be trapped on just one tiny slice of a higher-dimensional universe.
running time 5:03

The Quantum Café The Quantum Café

watch chapter 5 in
QuickTime
RealVideo

According to quantum mechanics, at the tiny scale of atoms and particles, the world is a game of chance.
running time 8:24

Wrestling with String Theory Wrestling with String Theory

watch chapter 5 in
QuickTime
RealVideo

By the 1970s, a few young physicists worked on taming the unruly equations of string theory and succeeded in describing how gravity works in the subatomic world, a key element missing from the Standard Model.
running time 7:18

Escaping Gravity Escaping Gravity

watch chapter 5 in
QuickTime
RealVideo

The weakness of gravity compared to the other forces has confounded physicists for decades, but now string theorists believe that gravity may be leaking into parallel universes.
running time 5:58

Gravity—The Odd Man Out Gravity—The Odd Man Out

watch chapter 6 in
QuickTime
RealVideo

For decades, no one could figure out how gravity operates when you get down to the quantum world of atoms and subatomic particles.
running time 4:25

The Theory of Everything The Theory of Everything

watch chapter 6 in
QuickTime
RealVideo

A revised version of string theory, free of mathematical inconsistencies, seemed capable of describing all the building blocks of nature, and it launched a hot new field of physics.
running time 5:29

Riddle of the Big Bang Riddle of the Big Bang

watch chapter 6 in
QuickTime
RealVideo

The origin of the universe has always been a mysterious event in which the laws of physics appear to break down. Could it be that the big bang was caused by the collision of two parallel universes?
running time 7:37

Strings to the Rescue Strings to the Rescue

watch chapter 7 in
QuickTime
RealVideo

Now string theory—the idea that everything is made of tiny, vibrating strands of energy—holds out the hope of unifying the world of the very large and the world of the very small.
running time 7:58

Multiple Dimensions Multiple Dimensions

watch chapter 7 in
QuickTime
RealVideo

Despite our perception that we live in a universe with four dimensions—three spatial and one temporal—string theory demands that our universe has 11 dimensions.
running time 6:57

Signs of Strings Signs of Strings

watch chapter 7 in
QuickTime
RealVideo

The hunt is on for evidence that supports string theory—for example, extra dimensions or supersymmetry.
running time 6:29

Science or Philosophy? Science or Philosophy?

watch chapter 8 in
QuickTime
RealVideo

String theorists have a problem: strings, if they exist, are so small that there's little hope of ever seeing one, so how can the theory be tested?
running time 3:35

Five Flavors of String Theory Five Flavors of String Theory

watch chapter 8 in
QuickTime
RealVideo

By the mid-1980s physicists had developed five different versions of string theory, raising the question of whether it would prove to be a theory of everything or a theory of nothing.
running time 4:59

Too Elegant to be Wrong? Too Elegant to be Wrong?

watch chapter 8 in
QuickTime
RealVideo

Will string theory turn out to be a dead end? Most string theorists believe that such an elegant and mathematically beautiful idea couldn't be completely wrong.
running time 3:53

   
NOVA Home Find out what's coming up on air Listing of previous NOVA Web sites NOVA's history Subscribe to the NOVA bulletin Lesson plans and more for teachers NOVA RSS feeds Tell us what you think Program transcripts Buy NOVA videos or DVDs Watch NOVA programs online Answers to frequently asked questions