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Aurora Borealis dancing over Tromso Urban Skyline. Tromso Panorama and winter night landscape with Northern Lights (Aurora Polaris) on a cold night, with starry sky, polar lights and snowcapped mountains on Kvaloya Island in the background. Cityscape with Brightly Street Light of the Arctic Capital, Northern Norway

Earth

The audacious quest to light up the sky with artificial auroras

How a Finnish physicist named Karl Lemström once became obsessed with recreating the aurora borealis from scratch – and may have ended up creating something even more intriguing

Features

The supernova remnant Cassiopeia A

Space

Odd elements in supernova blast might have implications for alien life

News

TX DATE:21-07-2025,TX WEEK:29,EMBARGOED UNTIL:08-07-2025 00:00:00,DESCRIPTION:Dramatic reconstruction of early anatomically modern Homo sapiens living in Africa.,COPYRIGHT:BBC Studios,CREDIT LINE:BBC / BBC Studios

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The four best science documentaries of 2025

Culture

Physics

Why quantum mechanics says the past isn’t real

Comment

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

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

News

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

How do we know the speed of light – and why does it have a speed limit at all? Leah Crane explores the history of one of the most important numbers in the universe

Comment

Space

We may have found a surprisingly nearby cluster of primordial stars

News

Comment

The best new science fiction books of November 2025

Culture

Space

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

Comment

Earth

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

Features