XRISM’s high-precision X-ray data revealed unusually strong signatures of chlorine and potassium inside the Cassiopeia A supernova remnant. These levels are far higher than theoretical models predicted, showing that supernovae can be major sources of these life-critical elements. Researchers believe powerful mixing deep inside massive stars is responsible for the unexpected boost. The findings reshape our understanding of how the building blocks of planets and life were created.
source https://www.sciencedaily.com/releases/2025/12/251208014620.htm
The HTML elements time forgot
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We’re all familiar with things like marquee and blink, relics of HTML of
the past, but there are far more weird and obscure HTML tags you may not be
awar...
4 hours ago
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