After traveling 1.8 billion miles over five years, NASA's Juno spacecraft has almost reached Jupiter.
Juno will be the first spacecraft in more than a decade to orbit the planet.
NASA's solar-powered spacecraft "Juno" is expected to start orbiting Jupiter Monday night. During its mission -- Juno will circle the planet 37 times -- soaring low over its cloud tops. It will study Jupiter's auroras and gather information to help scientists better understand its atmosphere and how it was formed.