Historically, all known objects in the Solar System originated from within it until the discovery of 'Oumuamua in 2017, the first confirmed interstellar interloper. Following that, Borisov was identified as a larger, ice-rich interstellar object. In July 2025, a third interstellar object known as A11pl3Z (renamed 3I/ATLAS) was confirmed. These interstellar discoveries have shifted the view of the Solar System from isolation to being part of a much larger, interconnected Milky Way galaxy, highlighting new cosmic findings beyond our local environment.
In July 2025, a third interstellar interloper, A11pl3Z (renamed 3I/ATLAS), was confirmed of interstellar origin, marking an exciting time for astronomy.
The discovery of interstellar objects like 'Oumuamua and Borisov has fundamentally shifted our understanding of the objects within our Solar System.
The Solar System, previously seen as isolated, is now viewed in context within a messy, interconnected Milky Way galaxy, revealing new cosmic possibilities.
Before 2017, all known Solar System objects were believed to originate from within it, but the discovery of interstellar visitors challenged this notion.
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