Is the interstellar asteroid really a comet?

(University of Hawaii at Manoa) The interstellar object Oumuamua was discovered back on Oct. 19, 2017, but the puzzle of its true nature has taken months to unravel, and may never be fully solved.Meaning 'scout from the distant past' in Hawaiian, Oumuamua was found by astronomers working with the University of Hawaii's Pan-STARRS1 survey as it came close to Earth's orbit. But what is it: an asteroid or a comet?

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