3I/ATLAS nears Earth on 29 October 2025: Rare interstellar comet has stunned scientists with cosmic secrets; tips to watch and related FAQs

Earth is set to host a rare visitor, interstellar comet 3I/ATLAS, on October 29, 2025. Discovered in July 2025, this ...
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3I/Atlas reaches its closest point to the Sun today — here’s what to expect from the mysterious interstellar comet

Contextualizing speed and distance helps set expectations. Around perihelion, 3I/Atlas is moving at roughly 68 km per second. Its closest approach to Earth is about 1.8 AU, near December 19, which is ...

3I/ATLAS Moves Like No Asteroid—Kaku Says Extra Energy Could 'Clinch' Alien Theory

Physicist Michio Kaku says interstellar object 3I/ATLAS may reveal signs of intelligent life if it gains energy near the Sun.