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Chandra Sees Magnesium in an Exploded Star - Universe Today
NASA's Chandra X-Ray Observatory has found unexpectedly large quantities of magnesium in an exploded star called N49B. N49B exploded as a supernova approximately 10,000 years ago, and it seems to have ejected a mass of magnesium equal to the mass of our Sun - this would make the original star 1,000 times larger than the Sun. High concentrations of magnesium usually correspond to high concentrations of oxygen in a star, but this wasn't the case with N49B. So how did the extra magnesium get there?