Title : Oumuamua.
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Oumuamua.
Are you following Oumuamua — the cigar-shaped object that passed through our solar system last year?A new paper by researchers at the Harvard Smithsonian Center for Astrophysics raises the possibility that the elongated dark-red object, which is 10 times as long as it is wide and traveling at speeds of 196,000 mph, might have an "artificial origin."
"'Oumuamua may be a fully operational probe sent intentionally to Earth vicinity by an alien civilization," they wrote in the paper, which has been submitted to the Astrophysical Journal Letters.
The theory is based on the object's "excess acceleration," or its unexpected boost in speed as it traveled through and ultimately out of our solar system in January....
"I am distinctly unconvinced and honestly think the study is rather flawed," Alan Jackson, fellow at the Centre for Planetary Sciences at the University of Toronto Scarborough, wrote in an email.... 'Oumuamua... travels in a complex tumbling spin, but a functioning solar sail would have a much smoother path and obvious radiation-driven acceleration, Jackson said. Even the spinning motion of a damaged solar sail would be far more strongly influenced by the radiation forces than seen, he explained....
"The thing you have to understand is: scientists are perfectly happy to publish an outlandish idea if it has even the tiniest 'sliver' of a chance of not being wrong," astrophysicist and cosmologist Katherine Mack tweeted. "But until every other possibility has been exhausted dozen times over, even the authors probably don't believe it."
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