Scientists have discovered a planet orbiting in the habitable – or Goldilocks – zone of Proxima Centauri, the closest star to our solar system. A moderate distance from its star, Proxima b may have liquid water on its surface. And possess an atmosphere with temperatures comparable to Earth's hot summer days. At 4.2 lightyears away, a light-driven nanocraft would travel for 20 years before reaching its surface to conduct tests and relay images. Scientists and astronomy enthusiasts are excited by the possibilities this Earth-like planet may hold, Perhaps as a colony for our descendants. Learn more about the new discovery here.