For the first time, scientists have heard the haunting ‘cry’ of two newborn black holes — a sound born from one of the ...

Two recently observed black hole mergers, occurring just weeks apart in late 2024, have opened an extraordinary new window ...

The theoretical physicist and best-selling author finds inspiration in politics and philosophy for rethinking space and time.

In the 10 years since the first detection of gravitational waves, we have detected hundreds of these waves produced by the ...

Albert Einstein changed science forever with special and general relativity, redefining space, time, and gravity. Yet after ...

A theoretical study suggests that gravity could have quantum effects without itself being a quantum theory. Other researchers ...

Most explanations rely on "dark energy" to explain the Universe's accelerating expansion rate, but a new study takes a different path.

Einstein was a great thinker who made plenty of mistakes—errors that sometimes led to more meaningful discoveries in physics, ...

The story begins with the black hole information paradox. According to relativity, anything that falls into a black hole is gone forever. According to quantum theory, that is impossible. Information ...

Gravitational waves are energy-carrying waves produced by the acceleration or disturbance of massive objects. These waves, which were first directly observed in 2015, are known to be produced during ...

Karl Schwarzschild, a child prodigy born in 1873, published on celestial mechanics by age 16 and earned his doctorate in astronomy in 1896. His career trajectory included directorships at the ...