Expo/Science & Industry/Whispers From the Cosmos

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Welch on-camera: text

In the course of a star's life, much of the material has been processed. Heavier atoms are produced out of lighter atoms like hydrogen and helium. And so now we have this material back in the interstellar medium and the cycle may resume.

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Copyright, (c) 1995: Board of Trustees, University of Illinois

NCSA. Last modified 11/11/95.