Time dilation — a core prediction of Einstein’s relativity — says that time moves slower for objects traveling at high speeds 🚀⌚ Scientists tested this using ultra-precise atomic clocks placed on fast-moving aircraft and satellites, comparing them with clocks that remained on Earth. In the 1971 Hafele–Keating experiment, atomic clocks were flown around the world on commercial jets ✈️ The result? The airborne clocks differed by about 273 nanoseconds — exactly as relativity predicted. Even more impressive, Global Positioning System (GPS) satellites experience a time shift of about 38 microseconds per day due to both special and general relativity 🌍📡 Without correcting for this, GPS navigation would quickly become inaccurate. These precision measurements didn’t just test theory — they confirmed that Einstein’s equations describe reality 🔬✨ Modern navigation, space technology, and high-precision systems all rely on relativistic corrections.