NASA'S Top Exploration and Discovery Stories of 2007

NASA moved forward in 2007 to explore the solar system, expand our knowledge of Earth and its place in the universe, and continue building the International Space Station. While the space shuttle flew three highly successful missions to continue the station’s assembly, construction began on a variety of projects designed to send astronauts to the moon to establish a permanent outpost, where they will prepare for eventual voyages to Mars. Space science missions were launched to Mars and the asteroid belt, while closer to home, Earth science satellites made a number of key discoveries, such as discovering how waterways beneath an Antarctic ice stream affect sea level and the world's largest ice sheet.