Time is not absolute, and Einstein argued that different observers experience the present differently depending on relativity.

In Interstellar, Miller’s planet orbits close to the black hole Gargantua, where gravity is so strong that time runs much slower. This is gravitational time dilation, a prediction of Einstein’s ...

Einstein’s theory of relativity was one of the giant leaps of the human intellect. So impressive was it that for years most physicists have accepted it as the fundamental law of the universe, even ...