Â鶹´«Ã½

time

WHY does time only move forward?

Physics

Why does time only move forwards? Possibly just because we’re ignorant

The one-way flow of time is one of the great mysteries of physics. It might be that we see causes and effects just because our information about reality is incomplete

Features

Stopwatch at swimming race

Technology

Stopwatch errors could make race times wrong by a tenth of a second

News

When time runs backwards: What thermodynamics can tell us about life

Physics

When time runs backwards: What thermodynamics can tell us about life

Features

Measuring time accurately increases the entropy in the universe

Physics

Measuring time accurately increases the entropy in the universe

News

Did time flow in two directions from the big bang, making two futures?

Physics

Did time flow in two directions from the big bang, making two futures?

Features

Sean Carroll event image

How time works with Sean Carroll

ROBERT PATTINSON and JOHN DAVID WASHINGTON in Warner Bros. Pictures’ action epic

Technology

Tenet review: Time twisting fun that is head-spinningly hard to grasp

Culture

Inside the incredibly slow race to reinvent time

Physics

Inside the incredibly slow race to reinvent time

Features

Gravity

Definition

Gravity

Why it's better to fall into a big black hole, and other bizarre facts

Space

Why it's better to fall into a big black hole, and other bizarre facts

Black holes exert a powerful pull on our imagination, but their weirdness starts way before you cross the event horizon, says astrophysicist Chris Impey

Features

Space

Astronomical time can help us put lockdown into perspective

Comment

Physics

In the quantum realm, cause doesn’t necessarily come before effect

Features

Humans

William Gibson's Agency drops time-travel paradoxes for big questions

Culture

Physics

Time travel without paradoxes is possible with many parallel timelines

News

Piano Exit Overlay Banner Mobile Piano Exit Overlay Banner Desktop