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How a radical redefinition of life could help us find aliens

Life

How a radical redefinition of life could help us find aliens

Sara Imari Walker, who developed Assembly Theory with chemist Lee Cronin, explains how the theory's definition of life might help us find it on other planets

Features

Why sending messages to extraterrestrials is controversial

Space

Why sending messages to extraterrestrials is controversial

Comment

An artist's impression of ‘Oumuamua, passing through the solar system

Space

Space rock or flashy alien technology? We're going to find out

News

The hunt for habitable ocean worlds beyond our solar system

Space

The hunt for habitable ocean worlds beyond our solar system

Features

Artist's impression of three planets orbiting an ultracool dwarf star

Space

Earth's algae and moss could survive under the light of another star

News

Saturn's moon Enceladus

Space

Enceladus shown to have all six of the essential elements for life

News

Goonhilly Earth Station

Space

Group that wants to contact aliens will transmit to TRAPPIST-1 system

News

image of message to extra terrestrials

Space

Scientists want to play chess with aliens as soon as we can find them

News

NWA 7034

Space

Mars may have been habitable millions of years later than we thought

News

The crater and its extremely harsh lake, Laguna Caliente, dominated by a single genus of extremophile Acidiphilium bacteria

Space

Bacteria survive extremes that may have existed in ancient Mars lakes

Microorganisms have adapted to one of the harshest environments on Earth, a sulphurous and acidic lake that is considered an analogue to ancient lakes on Mars

News

Space

Maps of planetary nurseries will help the complex hunt for alien life

News

Space

Martian cave entrances may offer a life-friendly radiation shield

News

Space

Microbes burping methane on Mars may be right next to NASA rover

News

Space

The clouds of Venus are too dry to support life as we know it

News