Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still ...

A physicist has proposed a bold experiment that could allow gravitational waves to be manipulated using laser light. By ...

A group of researchers have made a shocking discovery about one of the most fundamental forces in our universe. According to a new paper, which is set to publish in Physics of the Dark Universe next ...

Reviewers and technologists are raving about the realism of Gravity, the movie starring Sandra Bullock as an astronaut stranded in space, as well as George Clooney. One of the key technologies behind ...

It is usually impossible to create something out of nothing, so for example a photon, a particle with no mass, cannot change into another particle with mass. However, in the early and very extreme ...

Astronomers have just confirmed one of the strangest kinds of worlds imaginable, a planet drifting through the galaxy with no ...

Why is light affected by gravity if photons are massless? originally appeared on Quora: the place to gain and share knowledge, empowering people to learn from others and better understand the world.

The speed of gravity is the same as that of light, say two physicists. Knowing the speed of gravity is important for theories that attempt to unify the two pillars of physics: general relativity and ...

The creators of a light powered purely by gravity hope it will provide an alternative to toxic kerosene in the developing world. Almost a fifth of the world's population has no access to electricity ...