What is an Einstein Cross? Foreground galaxies warp space-time and bend the light from a distant galaxy to create four ...

The findings resolve a long-standing problem in fundamental physics. Scientists at Hiroshima University have created a practical and highly sensitive method for detecting the Unruh effect, a ...

Ten years ago, astronomers made history when they first detected ripples in spacetime, called gravitational waves, from the ...

Astronomers have seen something they did not expect: an Einstein Cross with not just the standard four images, there was an extra one. This unprecedented present might allow astronomers to better ...

A Belgian priest came up with the Big Bang almost a century ago—but he also wanted to keep science and faith as separate as ...

How astronomers used gravitational lensing, a space-time trick predicted by Einstein, to detect a black hole measuring 30 ...

Would you rather have a playoff spot basically nailed down with nine games left to play, or would you rather take a chance ...

Is time something that flows — or just an illusion? Exploring space-time as either a fixed “block universe” or a dynamic fabric reveals deeper mysteries about existence, change, and the very nature of ...

On September 14, 2015, a signal arrived on Earth, carrying information about a pair of remote black holes that had spiraled ...

Since that day, LIGO — composed of two highly sensitive laser interferometers located in Hanford, Washington and Livingston, ...

When LIGO detected gravitational waves unleashed from two colliding black holes for the first time in science history, it set off a whole new era in astronomy.

Ten years after scientists first detected gravitational waves emerging from two colliding black holes, the LIGO-Virgo-KAGRA ...