Physicists are quietly testing wild new theories that treat a hidden fifth dimension as more than science fiction, suggesting it could steer how gravity, dark matter and even cosmic history unfold.

The book Flatland: A Romance of Many Dimensions by Edwin A. Abbott explores the concept of physical dimensions through characters who encounter higher-dimensional beings. The protagonist, “A. Square,” ...

Researchers from the Okinawa Institute of Science and Technology (OIST) and the University of Oklahoma have pinpointed a one-dimensional system where such particles can exist and have examined their ...

A photon starting in a single time bin can be probabilistically transformed to a time-bin qudit state. Credit: American Physical Society A team of researchers has developed a technique that makes high ...

Discover why astronomy and cosmology are the universe's mapmakers. Discover how scientists trace galaxies, the cosmic web, and the large-scale architecture of our entire existence in three dimensions ...