Closing in on Jupiter: 7 Fun Facts About Juno's Mission

NASA's Juno spacecraft will reach Jupiter Monday (July 4) after a five-year journey through deep space. The probe will study the structure and evolution of the solar system's largest planet from orbit, taking measurements for at least a year despite Jupiter's intense radiation environment. One is to learn how much water is inside Jupiter, which should yield insights about the amounts of water that were present in the solar system's early days.