3I/Atlas - Interstellar Visitor
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3I/Atlas the mysterious interstellar comet originating from outside of our solar system which may be Alien in origin.
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- Printables
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- Physics & Astronomy
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- Creative Commons — Attribution — Noncommercial — Share Alike
Key Facts
- Discovery Date: July 1st, 2025;
- Estimated Shape: teardrop-shaped cocoon;
- Estimated Size: 5.6 kilometers to 320 meters;
- Current Speed: 58 km/s;
- Origin Direction: Constellation Sagittarius;
- Closest Earth flyby is expected on Dec 18, 2025.
Latest Updates
Stay informed with the newest observations and discoveries: 3I/ATLAS Tracker - Live Interstellar Object Updates
3I/ATLAS Metal Signature Could Indicate Artificial Origin, But Science Urges Caution (August 31, 2025)
The unusual nickel-without-iron emission from 3I/ATLAS breaks every rule of natural space chemistry. While some propose artificial origins, instrument limitations complicate conclusions.
Alien Visitor 3I/ATLAS Defies Everything We Know About Space Objects (August 27, 2025)
Two space telescopes reveal 3I/ATLAS has a massive 348,000 km gas cloud and alien chemistry unlike anything in our Solar System. What exactly are we looking at?
Former NASA Astronomer: 3I/ATLAS is an Ancient Cryo-Comet (August 25, 2025)
Marian Rudnyk explains why 3I/ATLAS unusual brightness and behavior can be explained by cryo-volcanic activity, comparing it to known comets like 29P/Schwassmann-Wachmann 1 and Halley.