Physicists have long treated space and time as the stage on which quantum particles perform, not as actors in the drama ...

Quantum mechanics and relativity are the two pillars of modern physics. However, for over a century, their treatment of space ...

The theorized unseen structure of spacetime could also explain of the outstanding questions about the accelerating expansion ...

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

Spacetime itself would also need to be “quantized,” or broken down into constituent parts. This is what the notorious string theory attempts to do, as does loop quantum gravity, currently considered a ...

A team of scientists has used X-ray and gamma-ray observations of some of the most distant objects in the Universe to better understand the nature of space and time. Their results set limits on the ...

There is a glaring gap in our knowledge of the physical world: none of our well-established theories describe gravity’s quantum nature. Yet physicists expect that this quantum nature is essential for ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A new theory suggests that the unification between quantum physics and general relativity has ...

When speaking of our universe, it's often said that "matter tells spacetime how to curve, and curved spacetime tells matter how to move." This is the essence of Albert Einstein's famous general theory ...

In the 1900s, Albert Einstein unified the concepts of space and time, giving us a useful new way to picture the universe. At the start of the 20th century, physicists had a problem: The speed of light ...