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Violent Past: Young sun withstood a supernova blast

A big bully pummeled our sun in its infancy, fatefully altering the composition and evolution of the solar system, a new study suggests. The heavy, in this case, was a nearby, massive star. First, the massive star pounded the young sun with fierce winds. Then, the tyrant exploded, blasting the sun with shock waves that suffused it and its embryonic planets with iron.

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