A wormhole is a hypothetical passage through space and time that connects two distant points in the universe. It is predicted by Einstein's theory of general relativity, which suggests that under certain conditions, such as extreme gravitational forces or exotic matter, it may be possible to create a shortcut between two separate regions of space-time. The concept has been popularized in science fiction and has become an iconic symbol for instantaneous travel across vast distances. However, despite the fascination with wormholes, there is no scientific evidence that they exist, and their existence remains purely theoretical.