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

The rapid acceleration of the universe’s expansion continues to challenge our understanding of fundamental physics. Why the ...

A century after Albert Einstein sketched out his radical picture of gravity, astronomers have now watched a black hole ...

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

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 ...

When speaking of our universe, it's often said that "matter tells spacetime how to curve, and curved spacetime tells matter how to move." This is the essence of Albert Einstein's famous general theory ...

The geometry of spacetime forms the very foundation of modern gravitational theory, where the elegant interplay between curvature and matter is described by Einstein’s field equations. In this ...

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 ...

Diagrammatic representation of the entropic quantum gravity action. The action for gravity is given by the quantum relative entropy between the metric of the manifold and the metric induced by the ...

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 ...