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extraterrestrial life

artist's impression of an exoplanet

Space

We may have found 20 habitable worlds hiding in plain sight

After taking another look at data from the Kepler space telescope’s original mission we have spotted 20 possible Earth-like worlds that could host life

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Proxima b

Space

Our closest star system may be home to a stolen star and planet

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Nine probes reached the outer solar system: Where are they now?

Space

Nine probes reached the outer solar system: Where are they now?

Features

Some TRAPPIST-1 planets may have the right conditions for water

Space

Some TRAPPIST-1 planets may have the right conditions for water

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We’ve just seen 15 new mysterious cosmic radio bursts from space

Space

We’ve just seen 15 new mysterious cosmic radio bursts from space

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artist's concept of plumes on Europa

Space

One of Europa’s plumes may not exist, making hunt for life hard

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Kepler planetary disk

Space

‘Alien megastructure’ star may host Saturn-like exoplanet

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Futuristic city

Space

Science fiction picks: Time for a reality check

Culture

Titan

Space

Building blocks of alien cells found on Saturn’s largest moon

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Foggy background forest with outline of child in the foreground

Physics

Aliens slumbering for billions of years are out there – really?

Trying to explain the Fermi paradox by invoking aliens that sleep for aeons is a speculative idea to be taken with a large pinch of salt, says Geraint Lewis

Comment

Life

The best way to detect aliens may be by finding their footprints

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Space

The exoplanet zoo – a whistle-stop tour

Features

Life

The ethics issue: Should we colonise other planets?

Features

Space

Messages from fake aliens decoded quickly in online SETI contest

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