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Humans could bring microbes into space

Space

Space germs: How can we avoid contaminating other worlds?

Headlines about alien flu from outer space exaggerate the risk of extraterrestrial microbes but we still need to be careful about taking our own germs off-planet, says astrophysicist Erika Nesvold

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Space

Planned moon landings could pelt orbiting spacecraft with dusty debris

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JWST has spotted a water vapor plume shooting out from the southern pole of Saturn’s moon Enceladus

Space

JWST has spotted an enormous plume of water coming out of Enceladus

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NASA's group that studies UAPs is holding its first public meeting

Space

NASA’s UFO team discusses its findings publicly for the first time

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We are finally closing in on the cosmic origins of the “OMG particle”

Space

We are finally closing in on the cosmic origins of the “OMG particle”

Features

Why sending messages to extraterrestrials is controversial

Space

Why sending messages to extraterrestrials is controversial

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Supermassive black hole. Elements of this image furnished by NASA.; Shutterstock ID 1756053335; purchase_order: -; job: -; client: -; other: -

Space

Lab imitations of the unobservable cosmos can be genuinely insightful

Leader

Milky Way. Night sky and silhouette of a standing man

Space

Questions I dread: How did the universe begin, and what is space-time?

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Physics

Nuclear clocks could be the best timepiece in the universe

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CE8NB6 Illustration showing galaxy giant whirlpool in space galaxy's effect on space image shows how gravity galaxy warps local

Physics

To create a wormhole that doesn't collapse, you need exotic matter

Making a wormhole that a human could theoretically travel through would require an upside-down universe and negative energy

Features

Physics

Why darkness between stars reveals more about the universe than light

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Comment

Space debris problem highlighted in new series of photographs

Regulars

Space

Alien messages responding to NASA signals could reach us by 2029

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Space

JWST has spotted the most distant galaxy cluster ever seen

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