english: When Einstein developed the theory of general relativity, one of the consequences of his theory was that space-time wasn't just an empty void but that it actually had a fabric.
non_english: Keď Einstein vytvoril všeobecnú teóriu relativity jeden zo záverov tejto teórie bol, že časopriestor nie je iba prázdne vákuum, ale má štruktúru.