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Mathematics

Why the problem of P versus NP is worth $1 million

Mathematician Tom Crawford explains what P versus NP means – and what makes the problem so fiendishly difficult to solve

News

A dramatic return from space in Kazakhstan

Space

A dramatic return from space in Kazakhstan

Regulars

The astrophysicist unravelling the origins of supermassive black holes

Space

The astrophysicist unravelling the origins of supermassive black holes

Features

This mosaic image of the magnificent starburst galaxy, Messier 82 (M82) is the sharpest wide-angle view ever obtained of M82. It is a galaxy remarkable for its webs of shredded clouds and flame-like plumes of glowing hydrogen blasting out from its central regions where young stars are being born 10 times faster than they are inside in our Milky Way Galaxy.

Space

Stellar views of some of the most spectacular sights in the universe

Regulars

Space

Astronauts may need medical evacuation from one-third of moon missions

News

Space

Bacteria on the space station are evolving for life in space

News

Queenstown aurora, Australia

Video

Astronomy Photographer of the Year showcases world's best space images

Video

The crew will attempt the first commercial spacewalk with SpaceX-designed extravehicular activity suits, upgraded from the current intravehicular suit.

Space

Current laws cannot protect civilians in space if something goes wrong

Leader

Chemistry

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

News

Space

Polaris Dawn mission is one giant leap for private space exploration

The success of the all-civilian spacewalk on SpaceX’s Polaris Dawn mission shows that private space flight is starting to catch up with government space agencies

Analysis

Mathematics

The mathematical theory that made the internet possible

News

Space

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

Leader

Space

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

News

Space

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

Analysis