But now we need to tackle the rest of relativity: How do we arrange matter and energy to make that particular configuration of spacetime possible? Unfortunately for warp drives, that's when we ...

But simple it isn’t. General relativity’s equations fail catastrophically at a black hole’s centre, known as its singularity, where the warping of space-time simply goes off the scale.

Meanwhile general relativity has never been found lacking. Its prediction that very dense agglomerations of mass could warp space-time so much that not even light could escape from it has proved ...

Dubbed by some as a “door to hell,” the black hole exerts an extreme influence on its surroundings, warping space-time and generating powerful emissions that stretch across vast distances.