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An alien spaceship over a city

Life

Spoiler alert: Why strange signals are never really from aliens

Given the wealth of planets in our universe, aliens must be dwelling somewhere, right? Maybe. But we’re never going to get our sci-fi moment, says Jacob Aron

Analysis

Russian telescope

Life

Mysterious signal unlikely to be aliens after SETI draws a blank

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The RATAN-600 radio telescope in Zelenchukskaya

Life

Mysterious SETI signal sends alien-hunting telescopes scrambling

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illustration of a planet in silhouette with a star behind

Space

Proxima b: 7 big questions about the new planet next door

Analysis

Life

Ocean worlds: Searching for life in the solar system's seas

Features

Robert Byer

Space

How lasers found gravitational waves – and could hunt for aliens

Features

A man wearing an orange boiler suit, hard hat and headtorch stands in the mine

Earth

Hunting for Mars-like life a kilometre below Earth’s surface

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China’s Five-hundred-meter Aperture Spherical Telescope (FAST)

Space

China builds world’s largest radio telescope to hunt for aliens

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Artist's impression of an alien world

Space

Impossible vanishing stars could be signs of advanced alien life

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Rip up the rule book and let NASA's Mars rover check 'life' zone

Life

Rip up the rule book and let NASA's Mars rover check 'life' zone

Contamination fears should not stop NASA sending its Mars rover to examine a nearby area that might contain water… and life, says Dirk Schulze-Makuch

Comment

Life

Is NASA doing enough to look for alien life?

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Space

First mirror-image molecule found in interstellar space

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Life

Spongy minerals could explain why Mars gives off methane burps

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Life

Pinball planets: How life could start in a violent solar system

Features