The arrow of time is a staple of human perception. Every second of every minute of every hour of every day, you live it. If you spill a drink, you can’t reverse time and pull the liquid back into the ...

Time feels like the most basic feature of reality. Seconds tick, days pass and everything from planetary motion to human memory seems to unfold along a single, irreversible direction. We are born and ...

Time only moves in one direction, but physics offers no clear reason why, and the answer may reveal something profound about the nature of reality itself.

There’s a lot we don’t understand about quantum systems. But over the past century, physicists have found ways to exploit the many oddities of quantum mechanics to their liking—including a new ...

Time feels like the most basic feature of reality. Seconds tick, days pass and everything from planetary motion to human memory seems to unfold along a single, irreversible direction. We are born and ...

In the beginning, there was no quantum entanglement. That is the conclusion of a study exploring the so-called entanglement past hypothesis. The finding is part of a quantum reinvention of our notions ...

For over a century, scientists have thought of time as a fundamental property of the universe. But the more researchers seek to understand time’s ultimate nature and the mechanics behind its emergence ...