As evidence continues to mount that the mysterious object with interstellar origins currently speeding toward the inner solar system at a breakneck speed is a comet, not everybody's convinced quite yet.

Harvard astronomer and alien hunter Avi Loeb raised the far-fetched, yet tantalizing possibility that the object, which was first spotted by astronomers earlier this year, could have been sent by an extraterrestrial civilization.

While he admitted in a blog post last month that it's most likely that "3I/ATLAS is a completely natural interstellar object, probably a comet," a letter to the editors of the journal Astronomy & Astrophysics has Loeb questioning that conclusion once more.

At the heart of the conundrum is the purported comet's tail. The glowing globs of icy particulates conventi

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