Astronomers believe they've discovered some of the universe's earliest stars, located about 13 billion light-years from Earth.

Black holes, regions of spacetime in which gravity is so strong that nothing can escape, are intriguing and extensively ...

Two distant black hole mergers detected in late 2024 have emitted powerful gravitational waves that matched predictions made over a century ago by Albert Einstein.

The early modern physicist Isaac Newton had presumed an unperceived yet real flow of time. To Newton, time is a dynamic physical phenomenon that exists in the background, a regular, ticking ...

A century ago, a star in Andromeda named V1 launched a revolution in astronomy, revealing its true immensity and the origin ...

An international team, spearheaded by Prof. Luciano Rezzolla at the Goethe-Universität, has invented a novel approach to ...

If true, it could mean the universe is destined to collapse rather than expand forever. Einstein proposed the cosmological ...

New research from UBC Okanagan mathematically demonstrates that the universe cannot be simulated. Using Gödel’s ...

By constructing these so-called Einstein-Rosen caterpillar wormholes, researchers offer a tangible way to imagine what the inside of a typical black hole might look like. Rather than being smooth or ...

Astronomers may have misread cosmic acceleration for 27 years. The universe may be slowing down, not speeding up.

The block universe concept suggests the past, present, and future coexist like a four-dimensional cube, with our sense of time flowing possibly being an illusion of entropy.

Physicists have taken a new approach to whether all black holes conform to Einstein’s theory of general relativity or if ...