Tag Archives: spacetime

An internationally joint research group between Singapore and Japan has unveiled a blueprint for arranging exotic, knot-like patterns of light into repeatable crystals that extend across both space and time. The work lays out how to build and control “hopfion” lattices using structured beams at two different colors, pointing to future systems for dense, robust information processing in photonics. Hopfions …

Thanks to a theory put forward by Albert Einstein over 100 years ago and a happy coincidence, astronomers have discovered radiation being pumped out from the core of a quasar — within which a supermassive black hole lurks. The team, led by Matus Rybak of Leiden University, made the discovery while hunting for cold gas in the galaxy RXJ1131-1231, an …

For more than a century, physicists have relied on two separate rulebooks to describe nature. Quantum mechanics excels at explaining atoms, photons, and every jiggle inside laboratories. Einstein’s general relativity, meanwhile, accounts for the way planets and stars bend the very fabric of space-time. Each framework is staggeringly accurate inside its own arena, yet they cannot be combined in a …