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Cosmology

Space

What does it mean if the universe has extra dimensions?

Dimensions beyond the four we鈥檙e familiar with could solve a host of problems in physics and cosmology. Columnist Leah Crane explores what a higher-dimensional universe might be like 鈥� and how we could find out if we live in one

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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

Space

The bombshell results that demand a new theory of the universe

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Space

Crisis in cosmology: If we鈥檝e got dark energy wrong, what could it be?

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Space

We鈥檝e glimpsed before the big bang and it鈥檚 not what we expected

Features

Space

Can we ever know the shape of the universe?

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HDB7KX STAR TREK: DEEP SPACE NINE, Avery Brooks, Nana Visitor, Rene Auberjonois, 1993-1999, "The Passenger

Space

Why Elon Musk has misunderstood the point of Star Trek

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The best new popular science books of February 2026

Culture

Space

The first quantum fluctuations set into motion a huge cosmic mystery

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3D6BBB4 Comet Lemmon photographed from northern Italy on 26th October 2025.

Space

Comets were on fire this year 鈥� for better or worse

Field Notes From Space-Time columnist Chanda Prescod-Weinstein on how comets grabbed the headlines in 2025

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Physics

Are we living in a simulation? This experiment could tell us

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Space

A distant galaxy is being strangled by the cosmic web

News

Space

Is the expansion of the universe slowing down?

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Space

The end of US support for the CMB-S4 telescope is devastating

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