Old stars are poor in heavy elements because there were very few previous generations of stars before the old stars formed.

Question

Quizplus · Accepted Answer

Old stars are poor in heavy elements because heavy elements are formed in the cores of stars and spread through the universe by supernova explosions. Since old stars formed early in the universe's history, there were fewer generations of stars before them to produce these heavy elements.

Old Stars Are Poor in Heavy Elements Because There Were