Physicists have long treated space and time as the stage on which quantum particles perform, not as actors in the drama ...

Astronomers have finally watched a black hole do something Albert Einstein only described on paper: twist the very fabric of ...

The theorized unseen structure of spacetime could also explain of the outstanding questions about the accelerating expansion ...

Einstein’s general theory of relativity shows that gravity is the result of a mass, such as a planet or star, warping the geometry of the merger of time and space known as spacetime. (Credit: ...

Good news, Doctor Who fans! A pair of physicists have proposed a spacetime geometry where Doctor Who's TARDIS would actually be capable of traveling both forward and backward through space and time.

If you want to understand gravity, it makes sense to study black holes. Nowhere else can you find so much gravity so conveniently compacted into such a relatively small space. In a way, in fact, black ...

Lorentzian geometry forms the mathematical cornerstone of modern spacetime theory by providing a framework in which the causal structure and metric properties of the universe can be rigorously ...

A region-delimited gravitational wave field can be constructed, such that a subset of geodesics crossing this region will move faster than nearby geodesics moving entirely inside flat spacetime, along ...

The title of the paper? “Traversable Achronal Retrograde Domains In Spacetime.” Yes, it is real science, and yes, the paper’s figures are excellent. Co-authored by physicists Ben Tippett* and David ...