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Space-time

Physics

Are space and time illusions? The answer could lie in black holes

Whether space and time are part of the universe or they emerge from quantum entanglement is one of the biggest questions in physics. And we are getting close to the truth

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Physics

What “naked” singularities are revealing about quantum space-time

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Physics

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

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Theory of everything and geometry

Physics

Why physicists are rethinking the route to a theory of everything

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TBTFJA star trail circle-space-night-sunset-blue

Physics

Why I’ve been somewhat obsessed with space-time this year

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Monika Schleier-Smith

Physics

The physicist trying to create space-time from scratch

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Physics

Is space-time quantum? Six ways to unpick the fabric of the universe

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S3F98G Colorful balloons against the light

Space

How the balloon analogy for an expanding universe is almost perfect

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Black hole. Abstract space wallpaper. Universe filled with stars; Shutterstock ID 2205005273; purchase_order: -; job: -; client: -; other: -

Physics

Bizarre portal-like 鈥榬ing wormholes鈥� could let you time travel

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CE8NB6 Illustration showing galaxy giant whirlpool in space galaxy's effect on space image shows how gravity galaxy warps local

Physics

To create a wormhole that doesn’t collapse, you need exotic matter

Making a wormhole that a human could theoretically travel through would require an upside-down universe and negative energy

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Space

Why general relativity is known as a background independent theory

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Physics

What does it mean when we say that space-time is expanding?

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Physics

What the thermodynamics of clocks tell us about the mysteries of time

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Physics

Why does time only move forwards? Possibly just because we鈥檙e ignorant

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