What is the fundamental role of supernova remnants regarding galactic chemistry?

Answer

They broadcast heavy elements synthesized in the star into the ISM, enriching gas clouds for future stars

Supernovae explode, scattering heavy elements forged inside the star (like carbon and iron) into the surrounding interstellar medium, which seeds the material for subsequent stellar and planetary formation.

What is the fundamental role of supernova remnants regarding galactic chemistry?
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