After the core of a massive star becomes a neutron star, the rest of the star's material a. falls inward very slowly, taking billions of years to get really compressed b. makes a planetary nebula, which gently moves outward from the center c. is vaporized by the incredible heat of the dying star and evaporates d. explodes outward as a supernova e. continues regular fusion and returns to the main sequence Submit Your Answer
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After the core of a massive star becomes a neutron star, the rest of the star's material a. falls in...
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