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Contemplating the mysteries of the fourth dimension is time well spent

Physics

Contemplating the mysteries of the fourth dimension is time well spent

From what it is and why it only goes one way to how we perceive its passage and whether we could live without it, a journey exploring the many outstanding questions about time is always worth taking

Leader

Why does time fly or drag? How emotions warp our temporal perceptions

Mind

Why does time fly or drag? How emotions warp our temporal perceptions

Features

How do we make the most of our time? The power of confronting death

Life

How do we make the most of our time? The power of confronting death

Features

5 Evolution - How long does evolution take? 2E8WW3F Time, traveling through space and time, 3d illustration

Earth

How long does evolution take? It happens on two different timescales

Features

8 Can we live without time?

Mind

Can we live without time? Not if we value a solid sense of self

Features

JILA?s three-dimensional (3-D) quantum gas atomic clock consists of a grid of light formed by three pairs of laser beams. A stack of two tables is used to configure optical components around a vacuum chamber. Shown here is the upper table, where lenses and other optics are mounted. A blue laser beam excites a cube-shaped cloud of strontium atoms located behind the round window in the middle of the table. Strontium atoms fluorescence strongly when excited with blue light.

Physics

Jun Ye interview: What use is the world's most accurate clock?

Features

Will time ever end? The answer lies in the death throes of the cosmos

Physics

Will time ever end? The answer lies in the death throes of the cosmos

Features

6 Will we ever unite physics? The infinite time is circulating in the universe, 3D illustration; Shutterstock ID 498879817; purchase_order: -; job: -; client: -; other: -

Physics

Will we ever unite physics? Clocks in superposition could offer clues

Features

3 How Do We Sense Time? Mechanical brain, conceptual image. Composite image of coloured medical imagery of a human brain and skull, with cogs and gears representing concepts such as memory, time and mechanical brains. The imagery includes 3D computed tomography (CT) scans of the skull and 3D magnetic resonance imaging (MRI) scans of the brain. The scans are of a 30-year-old woman.

Mind

How do we sense time? The brain cells that order our memories

Features

Could we ever go back in time? Relativity does not rule it out

Physics

Could we ever go back in time? Relativity does not rule it out

The physics thought to explain the arrow of time is not as simple as you might think – and in traversable wormholes, Einstein’s theory of general relativity does in principle offer routes to the past

Features

Physics

What is time? The mysterious essence of the fourth dimension

Features

Space

Gaia telescope’s new map of the Milky Way will let us rewind time

News

Physics

A new kind of time crystal has been created and lasts 10 milliseconds

News

Life

Rats can track the passage of time and judge their accuracy

News