Because of this design choice made 13 years ago, Juno has revolutionized how a deep space mission can operate. For future spacecraft traveling to the Jovian system, this means that a life powered by the sun can become the new norm. Missions farther out, to places like Saturn, are unfortunately too far out to have solar-powered visitors at this point. Saturn is another 1.2 billion miles beyond Jupiter, so there just isn’t enough sunlight there to power a spacecraft. But as solar technology continues to advance on Earth, the efficiency will rise, possibly someday leading to even deeper space missions powered only the sun's rays.