Mysterious 'Oumuamua Object Still Baffles Scientists 4 Years Later Four years after its discovery, the enigmatic 'Oumuamua object continues to spark intense debate among scientists. In 2017, astronomers detected the unusual, cigar-shaped asteroid as it hurtled through our solar system, but its origins and composition remain shrouded in mystery. Despite numerous studies, researchers have been unable to determine whether 'Oumuamua is an asteroid, a comet, or even an alien spacecraft. As scientists continue to analyze data from the object's passage, new theories and discoveries are shedding light on this cosmic puzzle, but many questions remain unanswered.