Oumuamua Debate: Alien Lightsail Possibility versus Hydrogen-Iceberg Counterarguments
To the point
Oumuamua’s unusual acceleration sparked a debate between natural explanations and alien-tech ideas, with Avi Loeb suggesting a lightsail and Darryl Seligman and Gregory Laughlin proposing a hydrogen iceberg, but Thiem Hoang and Loeb counter that hydrogen ice would not survive long interstellar journeys, leaving the true nature of the object unresolved and dependent on future data.
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