explain dwarf theory..
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A white dwarf is what stars like that Sun become after they have exhausted their nuclear fuel. Near the end of its nuclear burning stage, this type of star expels most of its outer material, creating a pluentry nebula. Only the hot core of the star remains. ... That means the white dwarf is 200,000 times as dense.
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The International Astronomical Union (IAU) defines a dwarf planet as a celestial body in direct orbit of the Sun that is massive enough for its shape to be controlled by gravitation but which has not cleared its orbital region of other objects.
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