快猫短视频

This week's magazine



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快猫短视频

This new Picture of the Month from the NASA/ESA/CSA James Webb Space Telescope features an astounding number of galaxies. The objects in this frame span an incredible range of distances, from stars within our own Milky Way, marked by diffraction spikes, to galaxies billions of light-years away.?? The star of this image is a group of galaxies, the largest concentration of which can be found just below the centre of this image. These galaxies glow with white-gold light. We see this galaxy group as it appeared when the Universe was 6.5 billion years old, a little less than half the Universe???s current age. More than half of the galaxies in our Universe belong to galaxy groups like the one pictured here. Studying galaxy groups is critical for understanding how individual galaxies link up to form galaxy clusters, the largest gravitationally bound structures in the Universe. Belonging to a galaxy group can also alter the course of a galaxy???s evolution through mergers and gravitational interactions. The galaxy group pictured here is the most massive group in what???s called the COSMOS-Web field. COSMOS stands for Cosmic Evolution Survey. This survey has enlisted several telescopes, including Webb, the NASA/ESA Hubble Space Telescope, and ESA???s XMM-Newton space observatory to gaze deeply at a single patch of sky.?? COSMOS-Web aims to understand how massive structures like galaxy clusters came to be. Webb???s infrared capabilities and sensitive instruments have pushed the search for galaxy groups farther back into cosmic history, revealing galaxy groups as far back as when the Universe was only 1.9 billion years old ??? just 14% of its current age. This image combines infrared data from Webb???s Near-InfraRed Camera (NIRCam) instrument with further infrared observations from the Hubble Space Telescope. The X-ray data, shown in purple, highlights the presence of hot gas concentrated within the X-ray galaxy group. These X-ray data come from ESA???s XMM-Newton space observ

Space

Colourful group of galaxies offers peek into history of the universe

There are thousands of galaxies contained in this image, including a cluster that looks to us as it was when the universe was just 6.5 billion years old

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Space

Dark energy bombshell sparks race to find a new model of the universe

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Humans

Ireland’s iconic megalithic tombs may have had an unexpected function

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Mind

Bitter argument breaks out over controversial theory of consciousness

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Technology

Quantum computers don鈥檛 always need more qubits 鈥 just add chaos

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Life

How Greenland sharks live for hundreds of years without going blind

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Health

Drugs like Wegovy can be effective at treating fatty liver disease

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Health

Your washing machine may not actually rid clothes of harmful bacteria

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Environment

Disastrous back-to-back heatwaves and droughts surge across Eurasia

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Health

Our cells can divide in a completely unexpected way

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Life

Best evidence yet that dolphin whistles are like a shared language

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Health

Key component of dark chocolate might have an anti-ageing effect

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Health

Brain signals can change the gut microbiome in as little as 2 hours

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Technology

Hijacked cicadas play music like a cyborg loudspeaker

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Environment

Extreme heat poses Spanish-style blackout threat to UK electrical grid

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Environment

Microplastics could be hampering the ocean鈥檚 ability to capture carbon

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Health

Innovative antivenom may work against the world’s deadliest snakes

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Technology

Housework robots are a step closer as they learn to work in any home

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Health

Our wounds heal slower than the cuts and scrapes of other primates

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Chemistry

A new version of the periodic table could change how we measure time

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Health

Air filters in classrooms reduce sick days by more than 10 per cent

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Earth

Earthquakes could be an overlooked source of underground hydrogen fuel

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