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artist's concept of comet 41P

Space

We’ve caught a comet switching its spin direction for the first time

A small comet has been spotted slowing down and then speeding up again – but in the opposite direction, which we have never seen before

News

Scientist of the Institute for Safety Problems of Nuclear Power Plants of the NAS of Ukraine in the Chernobyl Exclusion Zone, Ukraine, December 15, 2025. Anatoly Doroshenko

Physics

The man who crawls into the perilous heart of the Chernobyl reactor

Features

Chernobyl 2022

Physics

Exclusive report: Inside Chernobyl, 40 years after nuclear disaster

Features

Environment

Plug-in solar is coming – how dangerous is it and is it worth it?

News

Space

Earth may have formed from two separate rings around the sun

News

Space

Mysterious comet disintegration caught by telescope after lucky break

News

Space

We’ve spotted a huge asteroid spinning impossibly fast

News

Space

NASA changed an asteroid's orbit around the sun for the first time

News

Space

How to see six planets in the sky at once in rare celestial alignment

News

From images taken by NASA spacecrafts, this picture mosaic was created of six of the planets in our solar system and the Earth's moon. In the foreground is the Earth rising over the lunar surface with the sun flare at the edge of Earth. Venus is the first planet above the moon, and at the top left to right are the planets Jupiter, Mercury, Mars and Saturn. Photo credits are as follows: Earth - Apollo 17; Lunar Surface - Apollo 8; Sun - Apollo 12; Venus - Pioneer Venus; Jupiter - Voyager I; Mercury - Mariner 10; Saturn - Pioneer 11.

Space

What to read this week: Ripples on the Cosmic Ocean by Dagomar Degroot

From ice ages to asteroid strikes, an epic book shows how important it has been for humans to look outwards. Alex Wilkins surveys a climate historian's cosmic sweep

Culture

Space

Saturn’s rings may have formed after a huge collision with Titan

News

Environment

This state’s power prices are plummeting as it nears 100% renewables

News

Space

Synchronised volcanic eruptions on Io hint at a spongy interior

News

Space

Mars's gravity may help control Earth’s cycle of ice ages

News