In this video, we explore Albert Einstein's theory of general relativity, focusing on his insights into gravity and ...

Physicists have analyzed two enormous black hole mergers that happened one month apart and have come up with tantalizing ...

Two Caltech historians associated with the Einstein Papers Project have gathered together what they consider to be the most important of Einstein's ...

For the first time, scientists have detected two black hole mergers with spins so unusual they may reveal a new generation of ...

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

New strategies may soon allow scientists to test dark energy theories within our own solar system, linking cosmic-scale physics to local observation. Science advances through a cycle of proposing ...

Centuries before anyone pointed a telescope at the sky, Isaac Newton figured out how gravity works. He showed that any object ...

Two unusual gravitational-wave events, discovered by the LIGO-Virgo-KAGRA colloboration, enhance our understanding of black ...

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

Astrophysicists at the University of Chicago have developed physics-based models suggesting that dark energy could be ...

Time is not absolute, and Einstein argued that different observers experience the present differently depending on relativity ...

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