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Farewell, comet 3I/ATLAS! Interstellar visitor heads for the outer solar system after its closest approach to Earth

3I/ATLAS has now made its closest approach to the sun and Earth and is now heading back out toward the outer solar system.

Astrobitica December 19, 2025 (Last updated: December 19, 2025) 1 minute read

3I/ATLAS has now made its closest approach to the sun and Earth and is now heading back out toward the outer solar system.

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