Researchers are using black hole “shadow” images to test whether Einstein’s relativity remains unshakable. With next-generation telescopes, they hope to spot telltale signs of alternative physics ...

Recent advancements in observational techniques have led to the capture of high-resolution images of black hole shadows, ...

Explaining how a fly inside a rocket traveling near the speed of light cannot break the light barrier due to relativity.

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

Interstellar object 3I/ATLAS has seemingly confirmed Einstein's general relativity by exhibiting gravitational lensing as it neared the Sun. However, the observed light bending exceeded predictions by ...

Black holes are considered cosmic gluttons, from which not even light can escape. That is also why the images of black holes ...

At the turn of the century, it sounded as if string theory could give us big answers about the universe. Well… has it?

Physicists developed a method to test Einstein’s general relativity precisely where black hole shadow images reveal potential differences under alternative gravity theories. This simulation explores ...

String theory unifies all the forces of nature. Forces that seem very different, such as gravity and electricity, are deeply ...

Twin black hole collisions detected in 2024 have provided the sharpest-ever test of Einstein’s theory while revealing new details about how black holes form and spin.