Here is what Dimension X in "Stranger Things" really is and how it is completely different than The Upside Down.

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 ...

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

Paul M. Sutter is an astrophysicist at SUNY Stony Brook and the Flatiron Institute, host of Ask a Spaceman and Space Radio, and author of "Your Place in the Universe." Sutter contributed this article ...

When we think creatively, produce novel ideas, or otherwise have “Eureka” moments, we may actually unlock access to a dimension outside of our everyday perception, according to the controversial ...

Time, not space plus time, might be the single fundamental property in which all physical phenomena occur, according to a new theory by a University of Alaska Fairbanks scientist. The theory also ...

Here’s what you’ll learn when you read this story: Theoretical physicists believe math shows the possibilities of a fourth dimension, but there’s no actual evidence—yet. Albert Einstein believed space ...