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Health

How a midlife tune-up could help prepare you for a healthy old age

Most of us don’t worry about our health in old age until we get there, but research is increasingly showing that how you live in your mid-50s can have a real impact in your 90s

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Dark Matter Core Defies Explanation NASA ID: GSFC_20171208_Archive_e001774 NASA image release March 2, 2012 This composite image shows the distribution of dark matter, galaxies, and hot gas in the core of the merging galaxy cluster Abell 520, formed from a violent collision of massive galaxy clusters. The natural-color image of the galaxies was taken with NASA's Hubble Space Telescope and with the Canada-France-Hawaii Telescope in Hawaii. Superimposed on the image are "false-colored" maps showing the concentration of starlight, hot gas, and dark matter in the cluster. Starlight from galaxies, derived from observations by the Canada-France-Hawaii Telescope, is colored orange. The green-tinted regions show hot gas, as detected by NASA's Chandra X-ray Observatory. The gas is evidence that a collision took place. The blue-colored areas pinpoint the location of most of the mass in the cluster, which is dominated by dark matter. Dark matter is an invisible substance that makes up most of the universe's mass. The dark-matter map was derived from the Hubble Wide Field Planetary Camera 2 observations, by detecting how light from distant objects is distorted by the cluster galaxies, an effect called gravitational lensing. The blend of blue and green in the center of the image reveals that a clump of dark matter resides near most of the hot gas, where very few galaxies are found. This finding confirms previous observations of a dark-matter core in the cluster. The result could present a challenge to basic theories of dark matter, which predict that galaxies should be anchored to dark matter, even during the shock of a collision. Abell 520 resides 2.4 billion light-years away. To read more go to: www.nasa.gov/mission_pages/hubble/science/dark-matter-cor... Credit: NASA, ESA, CFHT, CXO, M.J. Jee (University of California, Davis), and A. Mahdavi (San Francisco State University)

Space

Why cosmology seems to be caught in a vibe shift

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Health

Why the sleep industry has got us worrying about the wrong things

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Health

We need to get better at identifying postpartum depression in dads

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Health

Rethinking our approach to BMI highlights the need for speed

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Personalised medicine is yet to deliver, but that must start to change

Health

Personalised medicine is yet to deliver, but that must start to change

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It would be a mistake to rush into an under-16 social media ban

Health

It would be a mistake to rush into an under-16 social media ban

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Life

How – and why – we chose the best 21 ideas of the 21st century

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Health

AI is promising to revolutionise how we diagnose mental illness

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Making autism into a partisan issue can only be harmful

Mind

Making autism into a partisan issue can only be harmful

While US President Donald Trump and his administration are making false and debunked claims about the causes of autism, real research is improving our understanding of the condition

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Health

2026 is set to be an even bigger year for weight-loss drugs

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Health

New Year's resolutions work better if you know what to measure

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Comment

Science still produced many wonders in 2025 despite being under siege

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Health

Human challenge trials have never been more popular

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