Artist’s concept of NASA’s Lucy spacecraft at an asteroid. Credit: NASA NASA’s Lucy spacecraft will add another asteroid encounter to its 4-billion-mile journey. On November 1, 2023, Lucy will get a close-up view of a small main-belt asteroid to conduct an engineering test of the spacecraft’s innovative asteroid-tracking navigation system. The Lucy mission is already breaking records by planning to visit nine asteroids during its 12-year tour of the Jupiter Trojan asteroids, which orbit the Sun at the same distance as Jupiter. Originally, Lucy was not scheduled to get a close-up view of any asteroids until 2025, when it will...