Why is the expansion of our universe accelerating? Twenty-five years after its discovery, this phenomenon remains one of the ...

Gravitational distortions produced by distant galaxies show a slight—but notable—disagreement with Einstein's predictions.

The James Webb Space Telescope's discovery of unusually bright and massive galaxies soon after the Big Bang has cast doubt on ...

The study says that the gravitational distortions observed in distant galaxies exhibit subtle discrepancies with the ...

If another gravity theory is correct, "then the broader implications are enormous," astrophysicist Stacy McGaugh told ...

The standard model for how galaxies formed in the early universe predicted that the James Webb Space Telescope (JWST) would see dim signals from small, primitive galaxies. But data are not confirming ...

The James Webb Space Telescope has discovered surprisingly large and bright early galaxies. This discovery challenges the ...

Dark matter is an essential element of galaxy formation and physics, according to the standard theory of how the universe ...

Scientists test the famous physicist’s predictions by calculating the distortion of time and space. Why is the expansion of ...

According to Einstein's theory, the universe is deformed by matter ... in addition to the deformation of space, to achieve the exact curvature of light. Are these equations still valid at the ...

A group of astronomers analyzing data from the James Webb Space Telescope ( JWST) say some of the oldest galaxies in our ...