Black hole and Big Bang singularities break our best theory of gravity. A trilogy of theorems hints that physicists must go ...

Dark matter is more than five times as abundant as all the visible matter in the universe. So why can't we see any of it?

Space might seem calm when gazing up at the night sky, but invisible waves ripple continuously through the universe, bending ...

Ever wonder why our current models of TK? No? Well, many psychisists have — and some have decided to take gravity into their ...

Let’s reimagine the walk of all walks. Not just a neighborhood stroll or a long-distance trek, but a bold journey to the ...

It was amazing to see how two observable signatures of the gravitational bending of light by ... objects cause a distortion in space-time, which is felt as gravity. At its simplest, it can be ...

This setup means you can have gravity without mass—something long believed to be impossible. These shells wouldn’t just hold galaxies together. As Lieu shows, they could even bend light.

However, general relativity predicts that large masses bend spacetime due to their gravity. In a black hole, this effect is so extreme that the terms 'before' and 'after' have no meaning.

In turn, that bending of spacetime tells matter how to move. Einstein was able to use this mathematical language to describe gravity, which was a huge success in its own right, but it wasn’t ...

It was already a mind-bending shift, last century ... That would be demonstrated if general relativity is derivable from quantum gravity. But space-time and its behavior are very different from the ...

This spectacularly successful theory has correctly predicted phenomena from the bending of light ... geometry of space and time—spacetime—is determined by gravity. So when we talk about ...