What Is 3I/ATLAS? Discovery, Orbit, Size, and Why It Matters
See Where 3I/ATLAS Is Right Now
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Harvard and 3I/ATLAS: Avi Loeb, the Alien Debate, and the Science That Changed Everything
How Harvard's Avi Loeb shaped the 3I/ATLAS story — from the Loeb Scale and Juno intercept proposal to JWST discoveries, 22 anomalies, and the Galileo Project's search for alien technology.
What Ended Up Happening with 3I/ATLAS: The Complete Story of Our Interstellar Visitor
From discovery to departure — the full story of Comet 3I/ATLAS, the third interstellar object. Alien chemistry, record-breaking observations, the Jupiter flyby, and where it's heading now.
ALMA Finds 3I/ATLAS Is Bursting With Methanol
ALMA radio observations reveal interstellar comet 3I/ATLAS has among the highest methanol-to-HCN ratios ever measured in any comet, hinting at alien chemistry.
3I/ATLAS Reaches Jupiter: Closest Approach, Gravitational Deflection & What Scientists Expect
Comet 3I/ATLAS reaches its closest approach to Jupiter on March 16, 2026. Learn about the gravitational deflection, Juno spacecraft observations, and what this historic flyby reveals about the interstellar visitor.