13. Interstellar Visitor: ‘Oumuamua
In 2017, astronomers spotted a truly extraordinary traveler: ‘Oumuamua, the first known interstellar object to pass through our solar system. With its elongated, cigar-like shape and mysterious acceleration, ‘Oumuamua quickly became the subject of intense scientific debate. Its origins remain unclear, fueling speculation and excitement about what else might drift in from the stars beyond. Source: NASA