The larger an object, the greater this intrinsic gravitational pull. But in , Albert Einstein completely tore that idea apart. He theorized that gravity is actually the result of a warping in spacetime a combination of space and time into one continuum. According to Einstein and his colleague Nathan Rosen, a wormhole is actually deformed space that has warped in such a way to connect two different points in space-time.
The result is a tunnel-like structure that could be straight or curved, linking two areas of the Universe that are incredibly far apart. Einsteinian mathematical models predict that wormholes exist, but none have ever been found. An effect called gravitational lensing would cause the brightness to fluctuate in a unique way. Unfortunately, Wheeler theorized that these impromptu wormholes would be super small, appearing at the Planck scale. You can have a clump of matter with negative energy and positive pressure or visa versa.
Negative properties of exotic matter might push the sides of a wormhole outward, making it large enough—and stable enough—for a person or a spaceship to fit through it.
But say we surmount even that in our hypothetical. In other words: Entering a wormhole could immediately kill you. In my research, I always pay most of my attention to interesting problems at the very boundary of our knowledge. Wormholes certainly fit into this description. A traversable wormhole allows for particles and fields to travel through it. Gravitational perturbations caused by massive objects on the other side of the wormhole would affect the motion of objects, for example stars, on our side.
A wormhole is regular and allows for a smooth travel from one side to another. Since we cannot send probes and spacecraft through a wormhole or a black hole in order to see the difference, the only way to distinguish them is to observe motion of objects around them. It is the best-studied star orbiting what is believed to be a supermassive black hole at the centre of the Galaxy. We know the motion and orbit of S2 with great precision. Don't get too excited, however; such a detection, if astronomers ever manage to make one, is unlikely to be a slam dunk.
And there's some more bad news on the space-exploration side: Wormhole travel will probably remain a mere sci-fi dream for a very long time, if not forever, Stojkovic said. To create a huge wormhole that's stable, you need some magic. Follow him on Twitter michaeldwall.
0コメント