Washington D.C. [USA], Feb. 23(ANI): 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, the area around the parent star where a rocky planet is most likely
Washington D.C. [USA], Dec. 4 (ANI): Scientists using radio telescopes in Australia and the USA discovered that the biggest galaxies in the universe develop in cosmic clouds of cold gas.