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Could our solar system have 9 planets after all?
For decades, our solar system was thought to have nine planets, with Pluto considered the smallest and farthest. But in 2006, Pluto was officially reclassified as a dwarf planet by the International ...
Mercury is the smallest planet in our solar system. Explore its size, extreme temperatures, core structure, and comparison ...
A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.
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