Space, Time And Einstein Online

Satellites move fast and are further from Earth’s gravity, meaning their clocks tick differently than ours. Without Einstein’s equations, your phone’s GPS would be off by kilometers within a single day.

In Einstein’s world, gravity isn't an invisible tug-of-war. Instead, it is the warping of spacetime caused by mass. Space, Time and Einstein

Before Einstein, Isaac Newton’s view ruled: time was a universal clock ticking at the same rate for everyone. Einstein shattered this by proving that . Satellites move fast and are further from Earth’s