Many of these stars are evident in the visible light photograph on the left. When photographed in ultraviolet light , however, different and less numerous stars emerge, as evident on the photograph on the right. Most of these stars are thought to have evolved past the current stage of our Sun . These stars no longer fuse hydrogen to helium in their core but rather fuse helium into carbon . These stars will soon shed their outer envelopes and end up as smoldering carbon embers known as white dwarf stars .
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