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HE 2359-2844 contains very high levels of lead - 10,000 times more than the Sun. It also contains 10,000 times more yttrium and zirconium than the Sun. It is suggested that there is a lead layer above the star that is 100 km (62 mi) thick and that contains 100 billion tonnes of lead. Dr. Naslim Neelamkodan explained that "the heavy-metal stars are a crucial link between bright red giants, stars thirty or forty times the size of the Sun, and faint blue subdwarfs, stars one fifth the size, but seven times hotter and seventy times brighter than the Sun."
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