Wormhole Shadow: Sharp Angles When Rotating ⚡ экспресс
Scientists studied what the silhouette (shadow) of a rotating wormhole — a hypothetical tunnel through space — looks like. It turns out its shape can change from smooth to pointy, with 'ears', depending on the wormhole's properties. Imagine a telescope capturing such an 'eared' shadow — and we realize it's a wormhole, not a black hole.
A wormhole is a tunnel through space, connecting distant regions of the Universe. Its shadow against a bright gas background was long thought to be as round as that of a black hole. But for a rotating wormhole (one you could actually traverse), the shape of the shadow might be surprising: the edge becomes jagged, like a gear.
If light passing through its throat is strongly 'stretched' (shifting in color toward red), then rotation causes the shadow to develop sharp protrusions. Researchers found a critical threshold: as soon as this stretching reaches a certain value, the shadow abruptly acquires teeth.
Such a 'jagged' silhouette is a key for future telescopes. If instead of a smooth shadow astronomers see a structure with notches, it would point not to a black hole, but to a wormhole.
🎯 Wormholes haven't been discovered yet, but Einstein's equations allow for their existence — just like black holes once were.
🎬 In Interstellar, the journey through a wormhole happened without its shadow — too bad: perhaps it would have looked like a gear.