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Life

Traces of ancient life reveal a 3.4-billion-year-old ecosystem

Chemical analysis of rocks found in South Africa shows that ancient microorganisms sustained themselves in a variety of ways, adding to evidence for an early origin of life on Earth

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Venus

Space

Molecules vital for life could survive in Venus’s acid clouds

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Martin Rees - Astronomer Royal

Space

'This century is special': Martin Rees on the vast span of time

Comment

Life

The science of why spending time in nature is just so good for us

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Physics

The laws of physics were broken in 2023 - by sperm

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Escherichia coli

Life

Life may be less chaotic than we thought, say physicists

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This illustration shows NASA's Cassini spacecraft diving through the plume of Saturn's moon Enceladus, in 2015

Space

Cyanide in the ocean of Saturn's moon Enceladus could be good for life

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Space

Mercury has salt glaciers that could provide the conditions for life

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The UFO shines on a male standing on the mountain; Shutterstock ID 1476587882; purchase_order: -; job: -; client: -; other: -

Space

Our hunt for alien life needs solid guidelines for clear-cut success

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FG10H1 JUPITER: EUROPA, 1979. /nJupiter's moon, Europa. Photographed by Voyager 2, 1979.

Space

How excited should we be by signs of life spotted on alien worlds?

We keep spotting molecular “biosignatures” in the atmospheres of planets beyond Earth, but it isn't clear if any of them can provide definitive evidence that we’re not alone

Features

Life

Hairy legs make you swim better – if you're a shrimp

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Earth

Ice might be ubiquitous, but we are still discovering things about it

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Space

Comets may bring ingredients for life most easily to clustered planets

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Life

How we will discover the mysterious origins of life once and for all

Features