Articles
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3 days ago |
newscientist.com | Alex Wilkins
If advanced alien civilisations are building vast satellite swarms designed to harvest a star’s energy, we should be able to see them – so why haven’t we? One answer might be that these structures, known as Dyson spheres, will likely destroy themselves before we can spot one, according to new calculations. The idea of structures that can siphon off most of the energy from their stars was first proposed by physicist Freeman Dyson in the 1960s.
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5 days ago |
newscientist.com | Alex Wilkins
One of the most famous exploding stars ever recorded by humanity may have been an invader from another galaxy, according to a new analysis of its movements. What is more, alien stars like this might be behind 1 per cent of all the supernovae we see in the galaxy. In 1604, astronomers saw a new, incredibly bright star appear in the sky, outshining any other. German astronomer Johannes Kepler, who also derived some of the first laws of planetary motion, observed the star for a year to track its…
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6 days ago |
newscientist.com | Alex Wilkins
All living things, including humans, constantly emit a ghostly glow – and it appears to vanish almost as soon as we die. Monitoring this signal could one day help track forest health or even detect diseases in people. The existence of this barely perceptible glow has been controversial, but it is thought to be the result of a process called ultraweak photon emission.
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1 week ago |
newscientist.com | Alex Wilkins
An artificial intelligence model trained on the medical data of 57 million people who have used the National Health Service in England could one day assist doctors in predicting disease or forecast hospitalisation rates, its creators have claimed.
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2 weeks ago |
newscientist.com | Alex Wilkins
An AI enabling robots to do chores like making the bed or cleaning up spills in homes it has never seen before could allow many more robots to become generally useful, its creators say. Large language models (LLMs) like ChatGPT have improved robots’ ability to carry out spoken requests. However, most robots work well only in environments in which they have been trained; their performance quality sharply falls when confronted with new and unfamiliar spaces.
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The asteroid Bennu, which NASA brought back samples from to Earth in 2023, is baffling scientists with its abundance of nitrogen and odd magnetic properties. https://t.co/tDkB8geBg6
A computer contained in a thin thread of stitchable fabric could be used to record, and understand, all sorts of information about the body that devices like Apple watches can't. And it's being tested on Canadian and US soldiers right now, in the Arctic. https://t.co/HOeJ3T4OE9
50 years after it was first dreamt up by Douglas Hofstadter, this fascinating fractal butterfly has been found in a real physical system (in graphene, no less)! It's butterflies all the way down 🦋 https://t.co/dRfxIQ3yDg