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#star composition #stellar makeup #astrophysics analysis #chemistry of stars #stellar biology

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#spectroscopy #star composition #light spectrum #redshift #doppler effect #astronomical optics #wavelength

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#astrophysicist #stellar physics #theoretical physics #space science #nuclear astrophysics #star composition #understanding stars

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#stellar metallicity #astronomical metallicity #heavy element abundance #star composition #astrophysics #z