Researchers from the Technion-Israel Institute of Technology have found that empty voids can move faster than the speed of light without breaking the laws of relativity. The study used advanced ultrafast electron microscopy to measure voids in phonon-polariton waves that act like light and sound waves combined. The results suggest that these singularities, which are often seen as lakes full of waves and ripples, can accelerate rapidly, but the faster they go makes it harder to observe them. The discovery reveals universal laws of nature across all types of waves, revealing how nature behaves in its fastest and most elusive moments. The researchers' new techniques could potentially uncover previously unexplored pockets across multiple scientific disciplines.