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 the ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The NASA Curiosity ...

NASA's Perseverance rover has encountered another rock on Mars that has left scientists puzzled. Named "St. Pauls Bay" by the mission team, the Mars rock features hundreds of millimeter-size dark ...