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What is one type of compact star with a mass similar to the sun but a diameter similar to earth?

User Lamakaha
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Step-by-step explanation:

neutron star, any of a class of extremely dense, compact stars thought to be composed primarily of neutrons. Neutron stars are typically about 20 km (12 miles) in diameter. Their masses range between 1.18 and 1.97 times that of the Sun, but most are 1.35 times that of the Sun.

User TjDillashaw
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