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Sloan Digital Sky Survey
January 5, 2017
http://www.sdss.org/press-releases/the-elements-of-life-mapped-across-the-milky-way-by-sdssapogee/
The six most common elements of life on Earth (including more than 97% of the mass of a human body) are carbon, hydrogen, nitrogen, oxygen, sulphur and phosphorus.The colors in the spectra show dips, the size of which reveal the amount of these elements in the atmosphere of a star. The human body on the left uses the same color coding to evoke the important role these elements play in different parts of our bodies, from oxygen in our lungs to phosphorous in our bones (although in reality all elements are found all across the body).
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