‘What we found was striking’: Physicists take the closest-ever look at a black hole’s mysterious event horizon

'What we found was striking': Physicists take the closest-ever look at a black hole's mysterious event horizon

Scientists have found evidence that gravitational waves generated by a spectacular black hole collision carry signals from the very edge of the newly formed black hole. If confirmed by future observations, this discovery could provide an entirely new way to investigate what happens in the immediate vicinity of a black hole without observing it directly. …

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Are CAPTCHAs obsolete in the age of AI?

Are CAPTCHAs obsolete in the age of AI?

When you click to enter a website or try to log in or fill out a form, you may be asked to identify motorcycles from a grid of grainy images, decipher a string of complex characters, or click a box saying “I’m not a robot.” These tests are called CAPTCHAs, which stands for “Completely Automated …

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Science news this week: James Webb telescope finds a never-before-seen substance, China’s ‘Great Green Wall’ grows faster than natural trees, and a Medici murder mystery is solved

A telescope floats above Earth on the left, and three women inspect a skeleton on the right.

This week’s science news was about activities in space, including reports of The James Webb Space Telescope (JWST) picked up a signal from a mysterious, never-before-seen object on Pluto and Titan.. The space telescope detected a characteristic absorption line in the spectra of these worlds’ atmospheres, revealing the distinctive trace of a unique and unknown …

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