Quantum theory and Einstein's theory of general relativity are two of the greatest successes in modern physics. Each works ...

But there are several important anomalies, including a widely debated one called the Hubble tension. It is named after Edwin ...

A recent astronomical event has provided evidence that black holes twist space and time, supporting a century-old theory proposed by Albert Einstein.

A century after Albert Einstein sketched out his radical picture of gravity, astronomers have now watched a black hole ...

Astronomers have just confirmed one of the strangest kinds of worlds imaginable, a planet drifting through the galaxy with no ...

A viral fan theory called “Conformity Gate” suggests another episode of "Stranger Things" could arrive on Jan. 7. Here’s what ...

Astronomers have obtained the sharpest-ever X-ray spectrum of an iconic active galaxy, providing the most accurate, precise ...