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Chemistry

How to turn most of the CO2 an astronaut exhales into fresh oxygen

A chemical reaction that recycles carbon dioxide into fresh oxygen could provide more sustainable life support for astronauts on the moon or Mars – and as a bonus, it also produces carbon nanotubes

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Space

Polaris Dawn mission is one giant leap for private space exploration

Analysis

How the most precise clock ever could change our view of the cosmos

Physics

How the most precise clock ever could change our view of the cosmos

Features

Mathematics

The mathematical theory that made the internet possible

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2XGTH8A In this image from video provided by NASA, astronauts Suni Williams, left, and Butch Wilmore give a news conference aboard the International Space Station on Wednesday, July 10, 2024. (NASA via AP)

Space

The Starliner stranding shows why NASA was wise to have a backup plan

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Space

SpaceX's Polaris Dawn crew set to attempt the riskiest spacewalk yet

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Space

Stranded ISS astronauts reveal the US space programme is not in crisis

Analysis

Space

JWST found rogue worlds that blur the line between stars and planets

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Chandra X-ray Observatory

Space

Why we need to save the Chandra space telescope

Comment

Illustration of NASA's Europa Clipper passing Europa

Video

Sam Howell: ‘One day we might look for life directly on Europa’

Sam Howell tells ¿ìè¶ÌÊÓƵ why NASA is so keen to visit Jupiter’s fourth-largest moon, Europa, and how the mission could help us figure out the likelihood of life elsewhere in the cosmos

Video

Space

Lightning can make energy waves that travel shockingly far into space

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Physics

How Einstein was both right and wrong about gravitational waves

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Space

Two NASA astronauts may be stuck on the space station until February

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Space

Critics of the International Space Station are missing the point

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