Wed. Aug 10th, 2022

Science fiction novels and movies are packed with distant ideas, most often as a springboard to an action-packed adventure rather than a serious attempt to predict future trends in science or technology. Some of the most common tropes, such as accelerating a spacecraft to amazing speeds in seconds without crushing the inhabitants, are simply impossible according to the laws of physics as we understand them. Still, the same laws seem to allow other seemingly distant sci-fi concepts, from wormholes to parallel universes. Here’s an overview of some of the sci-fi ideas that could really be done — at least in theory.

Wormholes

Traveling through a wormhole may be possible under certain gravity conditions.

Traveling through a wormhole may be possible under certain gravity conditions. (Image credit: Shutterstock)

The idea of ​​a wormhole — a shortcut through space that allows for almost instantaneous travel between distant parts of the universe — sounds as if it was created as a fictional story driver. But under its more formal name on an Einstein-Rosen bridge, the concept has existed as a serious theoretical concept long before sci-fi writers got a grip on it. It’s coming out Albert Einstein‘s general theory of relativity, what views gravity as a distortion of space-time caused by massive objects. In collaboration with physicist Nathan Rosen, Einstein theorized in 1935 that points with extremely strong gravity, such as. black holes, could be directly related to each other. And then the idea of ​​wormholes was born.

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