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space-time

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

Features

Soyuz-2.1 rocket booster with Soyuz MS-28 space ship

Space

What would Russia's inability to launch crewed missions mean for ISS?

Analysis

Plasma ball, conceptual illustration.

Space

Why dark matter is still one of the biggest open problems in science

Comment

Space

Astronomers may have glimpsed evidence of the biggest stars ever seen

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The 19 best Christmas gifts for science lovers (and nerds)

Technology

The 19 best Christmas gifts for science lovers (and nerds)

Comment

Physics

The fascinating story of the ultimate cosmic law

Comment

Space

We may have found a surprisingly nearby cluster of primordial stars

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The best new science fiction books of November 2025

Comment

The best new science fiction books of November 2025

Culture

CMB-S4 will use telescopes installed at the South Pole to measure variations in the temperature and polarization of microwave light across most of the sky to probe for ripples in space-time. Shown here is the South Pole Telescope. Photo: Brad Benson, University of Chicago, Fermilab

Space

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

Comment

Physics

Ultracold atoms could test relativity in the quantum realm

Confining and rotating extremely cold atoms or molecules within atomic 鈥淔erris wheels鈥 made from laser light could test relativity鈥檚 predictions on the quantum scale

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Earth

How worried should we be about noxious chemicals from dead satellites?

Features

Space

See the beauty of space, captured by the astronauts who experienced it

Regulars

Space

Is the universe really one big black hole?

Comment

Space

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

Features

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