WASHINGTON, April 15 -- NASA issued the following news release on April 14, 2025: * * * NASA's Lucy Spacecraft Prepares Second Asteroid Encounter NASA's Lucy spacecraft is 6 days and less than 50 million miles (80 million km) away from its second close encounter with an asteroid; this time, the small main belt asteroid Donaldjohanson. This upcoming event represents a comprehensive "dress rehearsal" for Lucy's main mission over the next decade: the exploration of multiple Trojan asteroids tha  more