NASA's Lucy will venture as close as 596 miles to this asteroid, an estimated 2 ½ miles in length but much shorter in width. Scientists should have a better idea of its size and shape following ...

NASA’s Lucy spacecraft had its second rendezvous with an asteroid over the weekend, this time with the uniquely named Donaldjohanson space rock. On April 20, the probe’s Lucy Long-Range ...

NASA's Lucy spacecraft gets up-close look of strange peanut-shaped asteroid: See images Donaldjohanson is likely a fragment from a collision 150 million years ago, making it one of the youngest in ...