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Interstellar Object 3I/ATLAS Pulses Every 16 Hours — But It Won't Affect Callisto

Summary by IBTimes UK
Astronomers have detected a strange, heartbeat-like pulse coming from the interstellar object 3I/ATLAS, which brightens and dims every 16.16 hours, a rhythm that has fascinated researchers and set social media buzzing with speculation about its potential impact on Jupiter's moon Callisto. But despite the attention, scientists stress that the effect is purely optical and carries no threat whatsoever to Jupiter, its moons, or the wider Solar Syste…
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IBTimes UK broke the news in United Kingdom on Tuesday, December 9, 2025.
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