In 1919, physicist Theodor Kaluza hypothesized that extra dimensions might solve some outstanding problems in physics. And ...

Physicists have determined that most of the universe is dark matter -- invisible to us but affecting the universe anyway.

The geometry of space, the setting in which physical laws operate, may hold clues to some of the biggest unanswered questions in fundamental physics. The underlying structure of spacetime itself could ...

Physicists explore whether the universe hides extra dimensions. These tiny, curled-up or warped dimensions could explain ...

Could the universe have hidden dimensions we’ve yet to detect? The idea of extra dimensions has intrigued physicists for over ...

Try picturing a fourth dimension. Take a few steps forward. Veer left for a second dimension, then jump up for a third dimension. Then dive off into a fourth dimension, somewhere, somehow, in a ...

For the first time, physicists have built a two-dimensional experimental system that allows them to study the physical properties of materials theorized to exist only in four-dimensional space. An ...

One of my favorite books as a child was called Flatland: A Romance of Many Dimensions. Written by a grade-school teacher in 1884, it’s a novel narrated by a square who lives in a two-dimensional world ...

For more than a century, physicists have suspected that the familiar three dimensions of space and one of time might be only ...