Interstellar Visitor
3I/ATLAS
Track the journey of the mysterious interstellar object as it travels through our solar system
Critical Trajectory Milestones
Perihelion
Closest approach to the Sun
Oct 29, 2025
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Earth Flyby
Closest approach to Earth
Dec 19, 2025
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Jupiter Flyby
Closest approach to Jupiter
Mar 16, 2026
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Sky Observation
When Can You See 3I/ATLAS?
Get real-time visibility forecasts, sky location, and equipment recommendations for your location
Brightness Forecast
7-day magnitude predictions and visibility trends
Sky Location
Live coordinates and constellation information
Equipment Guide
Personalized recommendations based on current brightness
Latest Updates
Breaking
How Scientists Just Shrunk a 'Mysterious Alien Probe' by 750 Times and Killed the Wildest Space Conspiracy Theory of the Decade
New scientific measurements dramatically revised 3I/ATLAS mass from 33 billion to 44 million tons, providing compelling evidence for natural comet origins and debunking artificial construction theories.
December 18, 2025
Read more →Breaking
This Ancient Interstellar Comet Could Rewrite Everything We Know About Life's Origins... And It's Coming Closer to Earth Than Ever Before
On December 19, 2025, 3I/ATLAS will make its closest approach to Earth at 269 million kilometers. This ancient interstellar comet carries organic molecules that could revolutionize our understanding of how life began.
December 17, 2025
Read more →Breaking
Astronomers Capture First-Ever X-Ray Vision of Mysterious Interstellar Visitor: What They Found Changes Everything
Japanese XRM satellite achieves historic first X-ray detection of interstellar object 3I/ATLAS, revealing a massive 400,000 km debris cloud and definitive evidence of natural comet behavior through unprecedented spectroscopic analysis.
December 13, 2025
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