The Loneliest Stars in the Galaxy

The Loneliest Stars in the Galaxy

The stars blazed until they exploded in bursts powerful enough to forge heavy chemical elements. Astronomers know stars so well, in fact, that they can tell when one doesn’t belong—when it’s migrated to our galaxy from a completely different one. Today astronomers study the chemical compositions of stars near and far, from our own sun to the most distant points of light.