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The little asteroid visited by NASA's Lucy spacecraft this week had a big surprise for scientists. It turns out that the asteroid Dinkinesh has a dinky sidekick — a mini moon. The discovery was made during Wednesday's flyby of Dinkinesh, 480 million kilometers (300 million miles) away in the main asteroid belt beyond Mars. The…

NASA's Lucy mission to the Trojan asteroids returned its first close-up images from a high-speed flyby of the asteroid Dinkinesh, which turned out to be an asteroid binary.

The little asteroid visited by NASA's Lucy spacecraft this week had a big surprise for scientists — a mini moon. The spacecraft made the discovery during Wednesday's close flyby of the asteroid Dinkinesh in the main asteroid belt beyond Mars. The asteroid is only a half-mile across while its moon is a mere one-tenth-of-a-mile in size. NASA sent Lucy past Dinkinesh as a rehearsal for the bigger, more mysterious asteroids out near Jupiter. Launched two years ago, the spacecraft will reach the first of these these so-called Trojan asteroids in 2027. Altogether, Lucy will swoop past 11 aster...

The little asteroid visited by NASA's Lucy spacecraft this week had a big surprise for scientists — a mini moon. The spacecraft made the discovery during Wednesday's close flyby of the asteroid Dinkinesh in the main asteroid belt beyond Mars. The asteroid is only a half-mile across while its moon is a mere one-tenth-of-a-mile in size. NASA sent Lucy past Dinkinesh as a rehearsal for the bigger, more mysterious asteroids out near Jupiter. Launched two years ago, the spacecraft will reach the first of these these so-called Trojan asteroids in 2027. Altogether, Lucy will swoop past 11 aster...

(CNN) — When NASA’s Lucy mission flew by its first asteroid this week, its cameras captured a surprise.