‘Part science, part art, part luck’: NASA’s Lucy spacecraft set to launch Saturday to explore 7 Trojan asteroids
Lucy, which was built by Lockheed Martin over about 14 months, weighs 3,330 pounds, is about the size of a car and spans four stories once its two solar arrays fan out. - NASA/NASA/TNS

Hoping to piece together the history of the solar system, NASA is set to embark on one of its most ambitious missions: Lucy, a 12-year journey to observe the primitive asteroids trapped in Jupiter’s path around the sun. NASA will attempt to launch the probe from Cape Canaveral Space Force Station’s pad 41 on Saturday between 5:34 a.m. and 6:49 a.m. aboard United Launch Alliance’s Atlas V rocket. The weather for the launch is currently 90% go. Named for the hominid fossil discovered in 1974 Ethiopia that scientists came to call Lucy, the spacecraft will fly by seven Trojan asteroids, each one n...