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Special Relativity in a Nutshell
Brian Greene explains Einstein's notion of the mutability of space and time in a way you can readily understand it.
Spooky Action at a Distance
That's what Einstein called it, dismissively, but ultra-strange quantum entanglement does exist, Brian Greene writes.
Traveling Through Time
Futurist Clifford Pickover declares that "time travel is possible." Find out why he is so sure.
Einstein Thought Experiments
Watch visualizations of ideas that helped Einstein devise his theories of relativity and of the equivalence principle.
The Spacetime Lemonade Stand
Thirsty for understanding? See how well people on the street can explain spacetime.
How Big Is the Universe?
Cosmologist Brent Tully takes on this big question and discusses some of astronomy's latest developments.
Heisenberg Humor
Quantum mechanics is nothing to laugh at. Well, sometimes it is.
The Making of the Quantum Club
What Is Gravity Made Of?
A "cosmic fingerprint" reveals the universe's beginning and gravity's microscopic secrets.
Finding My Father
At 18, Mark Everett found his dad's body. At 40-something, he discovered who his dad, an unusual physicist, really was.
Putting Relativity to the Test
Nearly a century after Einstein published his general theory, experiments continue to confirm its every prediction.
The Many Worlds Theory Today
What is Hugh Everett's theory of parallel universes, and do physicists today buy it? Hear from Everett's biographer.
Will We Ever Find ET?
What are the odds that smart aliens exist in the universe?
Pursuing Dark Matter, Hundreds of Miles Above Earth
We're about 12 million cosmic ray collisions from better understanding dark matter, say physicists at CERN.
The Amazing Atomic Clock
What are atomic clocks? And why do we need them?
Quantum Confidential
Learn how to send top-secret messages using quantum mechanics.
Inside Einstein's Mind
Retrace the thought experiments that inspired his theory on the nature of reality.
What is the Shape of a Proton?
A marble, a peanut, a donut—or all of the above? Go inside physicists' quest to understand the nature of the proton.
There’s More Than One Way To Hunt For Gravitational Waves
Will one of a handful of dark-horse experiments be the first to detect gravitational waves?
Does Antimatter Fall Up or Down?
Discover how physicists are investigating how gravity affects antimatter.
The Elegant Universe: Pt 1
Einstein's Dream: Combining the laws of the universe in one theory that explains it all is the Holy Grail of physics.
The Theory Behind the Equation
Michio Kaku explores the eureka moment when Einstein came up with special relativity, the theory that spawned E = mc2.
Schrödinger’s Menagerie
You already know Schrodinger’s cat. Now meet the other animals of the famous physicist's thought experiments.
Relativity and the Cosmos
Physicist Alan Lightman muses on what many consider Einstein's greatest achievement—general relativity.
Riddles of the Multiverse
USC theoretical physicist Clifford Johnson contemplates the controversial notion of multiple universes.
A Radical Reinterpretation of Einstein’s Theory
A cadre of physicists working on the theory of shape dynamics could change our understanding of reality.
Carl Sagan Ponders Time Travel
Is it possible? See what Sagan had to say about wormholes, the grandfather paradox, and the nature of time itself.
"Fringe" Science
How does the sci-fi series "Fringe" draw inspiration from real quantum physics and cutting-edge research?
A Quantum Leap in Computing
MIT's Seth Lloyd, a pioneer of quantum computing, explains its applications and revolutionary potential.
From Discovery to Dust
Follow the decades-long astrophysical odyssey that nearly glimpsed the beginning of time.
On Being a Physicist
Columbia's Brian Greene explains why history's greatest scientific thinkers, from Newton to Feynman, became his heroes.