Oumuamua: Nature of first known visitor from another solar system is still a mystery, scientists claim – The Independent

The nature and origin of Oumuamua, the first known visitor from another solar system, have become more mysterious after scientists claim to have ruled out a major explanation.
Researchers had suggested earlier this year that the origins and molecular structure of Oumuamua could be explained by it being a hydrogen iceberg. Among other mysteries, that would help solve the question of how it was able to power itself through such distant space, since pure hydrogen gas would have been able to push i…

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