The Hubble Space Telescope has spent more than thirty years providing some of the most incredible images of the known universe, but it's only for the last ten that scientists have pointed its gaze at our solar system's outer planets to observe them like never before.
For the past decade, NASA's Outer Planet Atmospheres Legacy program (OPAL) has been obtaining detailed views of the long-term changes in the skies of the four closest giants to Earth: Jupiter, Saturn, Uranus and Neptune, each home to a unique set of atmospheric variables. OPAL data has allowed astronomers to observe weather patterns and seasons of these outer planets to better understand their dynamics and changes over time.
