New research suggests researchers should start by comparing parameters other than time.

Quasicrystals are orderly structures that never repeat. Scientists just showed they can exist in space and time.

A new computational simulation of the early universe has revealed a fundamental, unbreakable geometric limit to the fabric of spacetime, dubbed the "Metric Wall." Discovered by independent physics ...

A new theoretical framework shows how subtle fluctuations in spacetime could be detected using existing interferometers.

It feels so obvious that time moves forward that questioning it can seem almost pointless.

We have known for several decades that the universe is expanding. Scientists use multiple techniques to measure the present-day expansion rate of the universe, known as the Hubble constant. These ...

Einstein–Rosen bridges may reflect a two-directional structure of time that preserves information and hints at a pre–Big Bang universe.

Flashes of gravitationally lensed starlight could act as cosmic lighthouses revealing the presence of binary supermassive ...

What: Researchers report the possible discovery of a millisecond pulsar near the Galactic Center using data from the ...

If the pulsar is confirmed, it could enable more precise measurements of the space-time around the galaxy’s central supermassive black hole ...

“Gray” holes are a theoretical concept proposed to describe objects that don’t fully behave like black holes or white holes. Unlike black holes, which only absorb matter, or white holes, which only ...