A Harvard scientist has stunned experts by claiming that the comet 3I/ATLAS, at least a million times the size off previous visitors, could actually be an alien spacecraft View 3 Images Artist’s impression shows the first interstellar object (Image: ESA/Hubble/NASA/ESO/M.Kornmesser / SWNS)

Renowned Harvard astrophysicist Avi Loeb has just published a jaw-dropping new blog claiming the interstellar comet 3I/ATLAS significantly bigger than previous visitors . According to the scientist, the enormous size and unusual features of 3I/ATLAS are so improbable for a natural object that they could be better explained if it were an alien spacecraft. ‌

Taking to his blog, Loeb pointed out that the comet has an inferred mass over 50 billiontonnes. He also argued that the object's jet

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