The mind-bending concept of time dilation results from a seemingly harmless assumption—that the speed of light is the same for all observers.

It's true that we have a thermodynamic arrow of time, and entropy always increases. But that can't explain what we perceive.

Einstein's theory of special relativity teaches us that time is relative. But what does it mean for time to be relative? How can we live in a universe where nobody can agree on when events start ...

While time is relative, it still flows in one direction for every observer. We don’t yet understand why, but some physicists are looking for answers that invoke the evolution of entropy, says ...

Waking up early is always hard for everyone. This relative element of time waits for no one. Time, as stated by Einstein himself, is said to be relative. In fact, it is kind of philosophically ...

The subjective sense that time moves faster as we get older is a universal one, and over the years scientists have proffered a number of different explanations as to why this happens. A professor ...