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In 2017, astronomers discovered an odd-looking object flying through the solar system. This peculiar visitor, named Oumuamua, made its closest approach to the Sun a month before appearing on our radars. By then, it was already speeding away from our solar system, on a journey through the cosmos. Its appearance sparked widespread curiosity and interest, especially because it was the first known interstellar object to visit our solar system. The object's mysterious acceleration near the Sun even led a Harvard astronomer to speculate that it might be an alien spaceship. But now, astronomers have found an explanation for the behavior of the interstellar visitor.  So why was Oumuamua (don’t pause after speaking the name) accelerating unusually when it passed close to the Sun? Did it really have any link to alien civilizations? Finally, and most importantly, how will this study unravel the mysteries of the celestial object’s origin? The 55th episode of the Sunday Discovery Series answers these questions. RESEARCH PAPER: Acceleration of 1I/‘Oumuamua from radiolytically produced H2 in H2O ice, Bergner and Seligman - All Episodes Of The Series: https://bit.ly/369kG4p Basics of Astrophysics series: https://bit.ly/3xII54M Created by: Rishabh Nakra Written by: Simran Buttar Narrated by: Jeffrey Smith