Few ideas in modern science have reshaped our understanding of reality more profoundly than space-time—the interwoven fabric of space and time at the heart of Albert Einstein's theory of relativity.

Many theories are rock-solid: Scientists have just as much confidence in the theories of relativity, quantum mechanics, ...

Scientists say fragments of energy may be the fundamental building blocks of the universe—not particles and waves.

A radical new theory regarding the origin of the universe suggests that gravitational waves, tiny ripples in spacetime first ...

How exactly did the universe start and how did these processes determine its formation and evolution? This is what a study ...

Curious connections between physics and math suggest to Latham Boyle that space-time may survive the jump to the next theory of reality.

Physics The radical idea that space-time remembers could upend cosmology There are new hints that the fabric of space-time may be made of "memory cells" that record the whole history of the universe.

A team of scientists claims a computational tool for studying black hole collisions could be our best bet for answering ...

Apart from curved space-time, what else dwells at the heart of black holes, if this theory is correct? According to Hennigar, strictly speaking, nothing.