杏吧原创

Time

Physics

Does time come from the entire universe running computations?

Explaining the passage of time has been a gnarly problem in physics basically forever, but physicist and computer scientist Stephen Wolfram has a radical proposal for where it comes from. He discussed his ideas on time 鈥� and what they mean for free will 鈥� with reporter Leah Crane

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Physics

Random wobbles in time could finally solve gravity鈥檚 greatest mystery

News

Physics

First working nuclear clock heralds a new era in timekeeping

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Physics

Toy universe shows that time could be a quantum illusion

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Comment

The best new science-fiction books of June 2026

Culture

Physics

First quantum grandfather clock could probe where gravity comes from

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Space

The hidden pockets of the universe where the future can cause the past

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Physics

Quantum batteries could be charged by reversing time

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UNITED STATES - NOVEMBER 26: Formally-attired audience sporting 3D glasses during opening night screening of film "Bwana Devil," the 1st full-length color 3D (aka "Natural Vision") motion picture, at Paramount Theater. 3d Film Audience, Hollywood, California, USA - 26 Nov 1952

Physics

Forget the multiverse. In the pluriverse, we create reality together

Features
A collage of analog clocks against a black background. Some are broken in half

Physics

The daring idea that time is an illusion and how we could prove it

The way time ticks forward in our universe has long stumped physicists. Now, a new set of tools from entangled atoms to black holes promises to reveal time鈥檚 true nature

Features

Mind

How rethinking your relationship with time could give you more of it

Features

Physics

How 3 imaginary physics demons tore up the laws of nature

Features

Physics

Why quantum mechanics says the past isn鈥檛 real

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Physics

Ultracold atoms could test relativity in the quantum realm

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