Social News22 February 2017 NASA Telescope Reveals Largest Batch of Earth-Size, Habitable-Zone Planets Around Single Star NASA’s Spitzer Space Telescope has revealed the first known system of seven Earth-size planets around a single star. Three of these planets are firmly located in the habitable zone, theContinue readingNASA Telescope Reveals Largest Batch of Earth-Size, Habitable-Zone Planets Around Single Star