Astrochemical Model Digs Into the Universe's Missing Sulfur

Sulfur is one of the most abundant elements in the universe. If you peer into a diffuse interstellar cloud, you find loads of it – about the amount expected based on fusion patterns of the stars it was born in. However, if you look at a dense, cold, molecular cloud – the kind where those stars actually form – it seems like 99% of the sulfur that is expected to be there is missing. Scientists have puzzled over this “missing…

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