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Physics

Quantum batteries could be charged by reversing time

Physicists have shown how time can effectively be reversed for some quantum systems, which would allow for new ways to harvest energy

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UNITED STATES - NOVEMBER 26: Formally-attired audience sporting 3D glasses during opening night screening of film

Physics

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

Features

Person looking up at starry night at Spiral Jetty, USA. Provider: Alamy Stock Photo Source: www.alamy.com Copyright: Celestine Dagli/Alamy

Physics

Would aliens do physics, or is science a human invention?

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Fractal conceptual illustration of supersymmetry or superstrings. Supersymmetry (SUSY) is a particle physics theory that proposes a type of spacetime symmetry relating two basic classes of elementary particles: bosons, which have an integer-valued 'spin', and fermions, which have a half-integer spin. If supersymmetry is a true symmetry of nature, it would explain many mysterious features of particle physics and would help solve paradoxes such as the cosmological constant problem. There is only indirect evidence for the existence of supersymmetry, primarily in the form of evidence for gauge coupling unification. Direct confirmation would entail production of superpartners at collider experiments, such as at the Large Hadron Collider.

Space

A crisis in cosmology may mean hidden dimensions really exist

Features

The weird rules of temperature get even stranger in the quantum realm

Physics

The weird rules of temperature get even stranger in the quantum realm

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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

Features

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

Mind

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

Features

How 3 imaginary physics demons tore up the laws of nature

Physics

How 3 imaginary physics demons tore up the laws of nature

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Physics

Why quantum mechanics says the past isn’t real

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An artwork made my layering many paper cutouts, showing an astronaut near a black hole. Within the black hole are colourful swirls, stars and specks

Physics

Black hole entropy hints at a surprising truth about our universe

Two clashing ideas about disorder inside black holes now point to the same strange conclusions, and it could reshape the foundations of how we think about space and time

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Physics

The fascinating story of the ultimate cosmic law

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Physics

Ultracold atoms could test relativity in the quantum realm

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Space

Is the universe really one big black hole?

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Space

Do black holes exist and, if not, what have we really been looking at?

Features