Mysterious 'Oumuamua Object Returns to Interstellar Space After 7-Year Journey A peculiar interstellar object, known as 'Oumuamua, has completed its 7-year journey through our solar system and is now on its way back into the vast expanse of interstellar space. Discovered in 2017, 'Oumuamua sparked intense debate among astronomers and scientists due to its unusual shape and unexplained origins. Initially thought to be a comet or asteroid, further observations have led researchers to propose alternative explanations, including the possibility that it is an alien spacecraft or probe. As 'Oumuamua disappears from view, scientists are left with more questions than answers about this enigmatic interstellar visitor.