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Join planetary astronomers Franck Marchis and Ariel Graykowski in this 50-minute SETI Live livestream exploring Comet 3I/ATLAS, only the third known interstellar object ever detected. Discover what happens when a visitor from another star system passes through our solar system as astronomers worldwide, including citizen scientists in the Unistellar Network, race to study this rare cosmic traveler. Learn about the comet's journey as it reaches perihelion on October 30, 2025, just inside Mars' orbit, providing an exceptional observation opportunity for spacecraft like Lucy and Psyche. Explore the current research challenges as the comet remains hidden behind the Sun until December 2025, when it will reappear for fresh observations from Earth and Lagrange-point observatories. Understand the scientific discoveries made so far, the methods researchers use to study interstellar visitors, and what this comet might reveal about the chemistry and dynamics of other star systems. Gain insights into the significance of interstellar objects and their role in advancing our understanding of planetary science and space exploration through this comprehensive analysis of one of astronomy's rarest phenomena.
