Star’s extreme proximity to Sagittarius A* means it could open new window onto black hole’s fundamental properties Astronomers have detected the fastest known star in the Milky Way, hurtling around the supermassive black hole at the heart of the galaxy. The star, called S301, travels at about 25,000km (15,500 miles) per second, 100,000 times faster than a commercial plane. It is also the closest known star to the Milky Way’s central black hole, Sagittarius A*, approaching it around the distance of Saturn to the Sun. Continue reading... from The Guardian https://ift.tt/NGtUWuq via IFTTT
Researchers say environmental impact from Kakhovka dam explosion comparable to Chornobyl nuclear disaster
The destruction of a large Ukrainian dam in 2023 triggered a “toxic timebomb” of environmental harm, a study has found.
Lakebed sediments holding 83,000 tonnes of heavy metals were exposed when the Kakhovka dam was blown up one year into Russia’s invasion, researchers found.
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