What is space-time? Depending on how fast you're moving or how close you are do Earth's gravity can change the way time feels ...

For decades, quantum physics and general relativity have stood as two powerful but separate theories. Quantum physics ...

This diagram illustrates spacetime as a "mat," showing how objects' masses cause it to curve into "dips" – the more mass, the deeper the dip ESA–C.Carreau ...

A novel theory of "wavy space-time" suggests the division between our best descriptions of the universe on its smallest and largest scales may be because gravity does not play by quantum rules.

Arkani-Hamed therefore suspects that the usual notion of quantum particles moving and interacting in space-time is an approximation of deeper, more abstract concepts, which, if found, could serve ...

Albert Einstein 's theory of general relativity —which explains gravity as the product of the distortion of space and time—may not be universally applicable. This is the conclusion of ...

A mathematical test for the nature of space-time – the fabric of physical reality – may be the first step towards novel computer-like devices that process information using gravity ...

And because gravity is also tied to our concepts of motion, inertia, space and time, this means our entire universe is also emergent from those same deeper processes.

One such Gravity Gradient Test Satellite (GGTS) was lofted into a 21,000-mile-high orbit in mid-June, and it is gradually but successfully stabilizing its attitude with one rod pointing toward the ...