60K views · 6K reactions | A green light for our NASA Solar System Exploration mission Lucy, following a successful critical design review on Oct. 18. The team can now begin building the spacecraft. Lucy will be the first-ever mission to visit the swarms of Trojan asteroids — "fossils of planet formation" — that orbit in tandem with Jupiter. Details: https://go.nasa.gov/2qyeHRW | NASA - National Aeronautics and Space Administration | Facebook