Astrophysicists using data from NASA’s Spitzer Space Telescope have suggested that isolated stars kicked to the edges of space by violent galaxy mergers may be the cause of mysterious infrared light halos seen across the entire sky. This artist’s concept shows so-called tidal tails, streams of stars being ripped away from their host galaxies (NASA / JPL-Caltech) These lonesome stars are thought to have once belonged to the galaxies before...
