We often marvel at the genius of Albert Einstein, a physicist who revolutionized our understanding of the universe. Yet, even ...

The first-ever detection of gravitational waves was made 10 years ago today (Sept. 14). In celebration, Space.com takes you ...

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 ...

As a massive black hole located 55 million light-years from Earth, the black hole at the center of M87 has a mass equivalent ...

In an extraordinary testament to the predictive power of Einstein’s theory of general relativity, a star system has been ...

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

Ten years after the first gravitational wave detection, a new suite of instruments has captured distinctive ringing signals ...

Gravitational-wave astronomy has exploded since 2015, capturing hundreds of black hole and neutron star collisions. With ever ...

The researchers employed a specific theoretical framework related to string theory to calculate the changes in these vibrations as black holes approach their 'limits.' The results indicate that as ...

Einstein’s theory of special relativity tells us that for a moving object, time passes more slowly than for a stationary ...

Astronomers detected in unprecedented detail a collision between two black holes. Their observations confirm predictions made ...