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3I/ATLAS Is 7 Miles Wide — the Largest Interstellar Object Ever Seen — New Photos From Vera C. Rubin Observatory Reveal

CHILE, JUL 24 – 3I/ATLAS, the third known interstellar object, travels at 60 km/s on a rare elliptical orbit, raising debate over its nature and origins among scientists.

Summary by Live Science
Detailed photos from the newly operational Vera C. Rubin Observatory have revealed that the recently discovered interstellar object 3I/ATLAS is roughly 7 miles wide, making it the largest of its kind ever seen.

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The solar system has just been visited by an interstellar intruder. It is called 3I/ATLAS and it is a comet that comes from beyond our borders. It is about 7 billion years old, which means that it is older than the Sun and any planet you know. This comet is only the third interstellar object that we have found entering our system. Before they were 1I/'Oumuamua (2017) and 2I/Borisov (2019).But there is something that makes 3I/ATLAS unique: it is …

·Madrid, Spain
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Astronomers anticipate that, because of their trajectory, it will be possible to contemplate it in different parts of the southern hemisphere.

·Buenos Aires, Argentina
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Comet C/2025 K1, known as ATLAS, will make its closest step to Earth, and Argentina is among the best places in the world to observe it.

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Infobae broke the news in Buenos Aires, Argentina on Wednesday, July 23, 2025.
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