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

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 know that something unseen is sculpting the cosmos, outweighing ordinary matter by roughly a factor of five, yet ...

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

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. When we think about how we can move through the Universe, we ...

It’s been 120 years since Henry Cavendish measured the gravitational constant with a pair of lead balls suspended by a wire. The fundamental nature of gravity still eludes our best minds - but those ...

When we think creatively, produce novel ideas, or otherwise have “Eureka” moments, we may actually unlock access to a ...

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,” ...

PBS Space Time is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire Tablet, Roku, Samsung Smart TV, and ...