For decades, physicists have accepted that the universe has two sizes: small and large. So-called classical equations govern big objects like baseballs and galaxies, while quantum mechanics describes ...

In 1905, a 26-year-old patent office clerk named Albert Einstein published his theory of relativity, advancing physics research worldwide. In 2005, the World Year of Physics is celebrated to ...

If a theory about the physical world is experimentally testable and then verifiable, it will stop existing in the realm of metaphysics and become a part of physics. No matter how weird or vague a ...

Across physics, biology and philosophy, a once-fringe idea is gaining new intellectual weight: the possibility that the ...

New research may have found a solution to one of the biggest problems in physics. Now scientists think that wormholes might be the solution, and they even have an equation to combine the two theories: ...

"Dark photon" theory says light's interference patterns may emerge from quantum particles, not waves, upending centuries of physics.

Many people outside of academic physics departments often have this question, due to a lack of communication between general public and researchers. What they don’t realize is that physicists have ...

One of the most stubborn problems in physics today is the fact that our two best theories to explain the Universe – general relativity and quantum mechanics – function perfectly well on their own, but ...

Dark matter and dark energy represent serious challenges to our understanding of the cosmos but, as Jeff Forshaw explains, the next few years promise to be exciting ones for theorists and ...

An extremely rare particle measurement from the world's largest atom smasher could cast doubt on a popular theory about the fundamental building blocks of the universe, including dark matter.