APOD 1.2

This image describes a highly unusual star, which was initially cataloged by the Sloan Digital Sky Survey. The article reports that, according to current understanding of star composition, this star should not exist; it has far less "heavy" elements than are expected, and is comprised mostly of Hydrogen and Helium. One possible explanation given in the article is that the "fragile primordial lithium" in the star's core was destroyed.