Infrared galaxies didn't always prefer the 'suburbs'Posted: 1 year ago by AutumnLotus Dusty infrared galaxies are cosmic "nurseries" for some of the universe's hottest young stars -- and new research from NASA's Spitzer Space Telescope shows that when the universe was approximately six billion years old, these galaxies packed into the densest "zip codes" in space. Astronomers hope that this latest finding will give them insights into why the modern universe looks the way it does. Comments: 1 Score: [-] 213 [+].