Aliens. Our mysterious extra terrestrial friends that we still have yet to discover; if there is anything to discover. Aliens are thought out to be these life-like beings, but where would they live to support their life? The needed environment is much like ours, lots of oxygen and nitrogen, a good atmosphere to block out some harmful rays, and a source of water and food. Our Earth is that perfect place for that environment, but that's already inhabited by us. In our solar system, Mars and Venus have been the typical places that other life would live. Because of the evolution of our solar system, our universe is packed with hydrogen and helium. Unfortunately, we can't breathe that in to save our lives, so neither could aliens. But, scientists have discovered earth-like planets out of our galaxies orbiting around massive stars. Could this be their big break?