A new study examining the mysterious interstellar object known as 'Oumuamua' suggests that the curious celestial interloper was likely just a comet. Since first being discovered back in 2017, the oddly-shaped 'visitor' has been the subject of considerable speculation among scientists with an array of theories being offered for its origin and nature. While Harvard astronomer Avi Loeb made headlines in 2018 with his suggestion that Oumuamua could be an alien probe powered by a solar sail, more prosaic explanations put forward by researchers included an asteroid that was once a piece of a planet or simply a strange comet.
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