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Mysterious 'Heartbeat' Pulsating From Interstellar Object 3I/ATLAS as It Nears Earth

As the cosmos whispers secrets to our telescopes, a new mystery unfolds: an interstellar visitor named 3I/ATLAS is emitting rhythmic bursts of light, dubbed a “heartbeat,” as it hurtles toward Earth. Discovered in late 2025, this comet from beyond our solar system will make its closest approach on December 19, just 170 million miles away—far enough to pose no danger, but close enough to captivate scientists and stargazers alike.

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This cosmic object, which could be more than seven billion years old, passes through our solar system before disappearing permanently into deep space.

The mysterious 3I/ATLAS interstellar object has developed a strange pulsation that causes it to glow brighter. For details, read ᐅ TSN.ua (news 1+1)

Comet 3I/ATLAS has been capturing the attention of the scientific world for months because it is a "single visitor" who transits our solar system from interstellar space. This comet, which stands out for its speed and composition, now does so for something else, a new phenomenon that has surprised astronomers. What is comet 3I/ATLAS The 3I/ATLAS is an ice body of external origin to our solar system. It was detected in July 2025 by the ATLAS netw…

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Expansion broke the news in on Wednesday, December 3, 2025.
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