Interstellar object 3I/ATLAS reaches its perihelion, prompting Harvard's Avi Loeb to suggest it's an 'alien mothership.' Learn about his 'acid test' theory and his warning that 3I/ATLAS could release ...
The interstellar object 3I/ATLAS will reach its closest point to the Sun on 29 October 2025, a moment astronomers call perihelion. This rare passage marks the midpoint of its journey through the Solar ...
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