In a remarkable discovery, researchers have confirmed the existence of the "Einstein zig-zag," a rare cosmic phenomenon linked to gravitational lensing.

Here’s how it works. General relativity is physicist Albert Einstein's understanding of how gravity affects the fabric of space-time. The theory, which Einstein published in 1915, expanded the ...

The fabric of space and time is not exempt from the effects of gravity. Plop in a mass and space-time curves around it, not ...

A compound lens forged by two galaxies is helping astronomers get a bead on the Hubble Constant and dark energy.

Why is the expansion of our Universe accelerating? Twenty-five years after its discovery, this phenomenon remains one of the greatest scientific mysteries. Solving it involves testing the fundamental ...

The James Webb Space Telescope has identified the first-ever "Einstein zig-zag," a distant quasar lensed six times by two ...

But if the speed of light is identical for all observers, something else has to give: absolute time and space. Einstein concluded that the cosmos has no universal clock or common reference frame.

Using the James Webb Space Telescope, astronomers have discovered the first "Einstein zig-zag," an image ... in the very fabric of space and time, united as a single entity called "spacetime." ...

We spoke with theoretical physicist Brian Greene about Einstein's theory of space-time. Many scientists believe space-time is a fundamental concept. But Greene thinks there might be something ...

Einstein’s general theory of relativity can be summed up in just 12 words: “Space-time tells matter how to move; matter tells space-time how to curve”. But this short description from the ...

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 physicists ...