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04/28/2018 / By David Williams

Recently discovered alien planet is metal-heavy, like our Mercury, and also close to its sun

The solar system has an assortment of eight different planets orbiting the sun. While each of them is different in their own unique way, they are mostly similar, with one exception. While most of the smaller planets in the solar system are compositionally similar to Earth, bearing a small, solid metal core that makes up […]

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