The concept of spacetime, first described in Einstein's theory of general relativity, has since been widely studied by many ...

Let’s talk about quantum gravity experiments that can be done here on Earth! If we discover how to connect quantum mechanics with general relativity we’ll pretty much win physics. There are multiple ...

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From Newton’s apple to Einstein’s spacetime, gravity has been tested on scales from sub-millimeter experiments to galaxy clusters millions of light-years apart. Recent studies confirm its laws hold ...

A new study suggests Einstein’s spacetime may preserve hidden geometric structures that remain intact as the universe evolves, similar to magnetic field lines in plasma. By reformulating general ...

What if gravity isn’t weirdly quantum at all, but rather … just a bit messy? The holy grail of theoretical physics is to find the long-sought theory of quantum gravity. But what if this theory is as ...

Most of today’s leading theoretical physicists have a shared perspective about what the next revolution in physics will look like. They think reconciling Albert Einstein’s general theory of relativity ...

If you believe Albert Einstein – and he has never been wrong about gravity after many experiments – gravity isn’t a “thing” ...

The original version of this story appeared in Quanta Magazine. At the beginning of time and the center of every black hole lies a point of infinite density called a singularity. To explore these ...

Two blind spots torture physicists: the birth of the universe and the center of a black hole. The former may feel like a moment in time and the latter a point in space, but in both cases the normally ...

The only difference with black holes is that they are incredibly dense, so that if another object gets closer than the event ...