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Interstellar object 3I/ATLAS passed Mars last night

Posted on October 7, 2025 by Administrator

The world’s 3rd known interstellar object – 3I/ATLAS – has made its closest approach to Mars. The approach took place at 4 UTC on October 3, 2025 (11 p.m. CDT on October 2). At that time, the comet was approximately 18 million miles (29 million kilometers) from Mars. It was the object’s closest approach to any planet during its one-time journey through our solar system.