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Physics

Time may be an illusion created by quantum entanglement

The true nature of time has eluded physicists for centuries, but a new theoretical model suggests it may only exist due to entanglement between quantum objects

News

Quantum time travel: The experiment to 'send a particle into the past'

Physics

Quantum time travel: The experiment to 'send a particle into the past'

Features

Physics

Quantum 'arrow of time' suggests early universe had no entanglement

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How indefinite causality could lead us to a theory of quantum gravity

Physics

How indefinite causality could lead us to a theory of quantum gravity

Features

Mathematics

500-year-old maths problem turns out to apply to coffee and clocks

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Mathematics

The mathematician who worked out how to time travel

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Physics

Most accurate clock ever can tick for 40 billion years without error

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Physics

How one theory ties together everything we know about the universe

News

Person writing math equations on glass

Mathematics

Why science relies too much on mathematics

News

Theory of everything and geometry

Physics

Why physicists are rethinking the route to a theory of everything

Physicists’ search for a theory that explains all reality in one framework appeared to have stalled. But now they are reinvigorating the hunt by exploring a wild landscape of abstract geometry

Features

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See antique clockwork marvels from China's Forbidden City

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Comment

Antique clocks give a window into scientific innovation of times past

Regulars

Space

'This century is special': Martin Rees on the vast span of time

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Video

5 must-see time travel movies reviewed by a metaphysicist

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