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Space

What does it mean if the universe has extra dimensions?

Dimensions beyond the four we’re familiar with could solve a host of problems in physics and cosmology. Columnist Leah Crane explores what a higher-dimensional universe might be like – and how we could find out if we live in one

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Technology

The 3 things you need to know about passwords, from a security expert

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Mind

Why are we so suspicious of do-gooders?

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Left: James Woodford Right: A,Wild,European,Rabbit,(scientific,Name:,Oryctolagus,Cuniculus),At,Jerrabomberra A wild European Rabbit (scientific name: Oryctolagus cuniculus) at Jerrabomberra Wetlands Nature Reserve in Canberra (standing upright).; Shutterstock ID 2336480569; purchase_order: -; job: -; client: -; other:

Life

I was accused of killing over 100 million rabbits across Australia

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Health

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

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Space

What is a galaxy? That's a surprisingly difficult question to answer

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Humans

We’ve only just confirmed that Homo habilis really existed

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Mathematics

The secret to guessing more accurately with maths

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Space

Why Yuri Gagarin wasn’t the first in space – and who beat him to it

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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

Whether you call it a vibe shift or a paradigm shift, physicists must be ready to challenge their fundamental understanding of the universe without fear or nostalgia

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Physics

Would aliens do physics, or is science a human invention?

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Health

Can magnesium supplements improve sleep, energy and concentration?

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Technology

Could a niche 80s technology be the key to better quantum computers?

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Technology

Why I have changed my mind about AI and you should too

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