Tracing the Galactic Origins of Three Interstellar Objects: Distinct Thin- and Thick-Disk Origins Across the Milky Way

To the point

Shokhruz Kakharov and Abraham Loeb show that the three known interstellar visitors to the Solar System come from different parts and ages of the Milky Way, proving that material is ejected into interstellar space throughout the Galaxy’s history and that where they came from helps explain their varied properties.

Tracking the Interstellar Objects 1I/Oumuamua, 2I/Borisov, and 3I/Atlas to their Source
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Tracking the Interstellar Objects 1I/Oumuamua, 2I/Borisov, and 3I/Atlas to their Source

In a recent paper, researchers followed the trajectories of 1I/`Oumuamua, 2I/Borisov, and 3I/ATLAS - three installer objects that have entered the Solar System in the past decade - to constrain their possible origin. Through a series of Monte Carlo simulations, they came up with predictions of where they came from and how old they are.