Asteroid 2024 YR4 may hit Earth in 2032 – how worried should we be?

Published on February 6, 2025

The risk of asteroid 2024 YR4 hitting Earth seems to be creeping up as astronomers gather more data, but does that mean we should be scrambling to prepare for an impact in 2032?

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For astronaut radiation protection, just add water

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Space is not the safest place to be. During spaceflight, both devices and humans risk exposure to high levels of radiation. Without sufficient protection, instruments would malfunction, and astronauts might face serious health risks. A team of researchers from Ghent University in Belgium are testing the potential of 3D-printed hydrogels – materials that can soak up large amounts of water – to serv

Earth from Space: Snow-capped Swiss Alps

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Image: The ranges and valleys of the Swiss Alps stand out in this image captured by the Copernicus Sentinel-2 mission in December 2024.