Mysterious 'Oumuamua Object Still Defies Explanation After Five Years In 2017, astronomers made a groundbreaking discovery when they detected an unusual object hurtling through our solar system. Designated as 'Oumuamua, the object has been the subject of intense speculation and debate ever since. Despite being the first known interstellar visitor to Earth, scientists have been unable to determine its exact composition, origin, or purpose. Now, five years after its initial detection, researchers are still struggling to understand the enigmatic 'Oumuamua, leaving many to wonder if it's a natural phenomenon or something more extraordinary.