“Oumuamua may actually be a light sail of extra-terrestrial origin.”

No word yet on when the alien invasion is to take place


Tue, Nov 6th, 2018 11:00 by capnasty NEWS

Remember ‘Oumuamua, that cigar-shaped interstellar object that quickly passed through our solar system? According to a pair of Harvard stargazers, it may have been an extra-terrestrial solar sail. Neil deGrasse Tyson disagrees.

To this, Bialy and Loeb offer a counter-explanation. If 'Oumuamua were in fact a comet, why then did it not experience outgassing when it was closest to our sun? In addition, they cite other research that showed that if outgassing were responsible for the acceleration, it would have also caused a rapid evolution in 'Oumuamua's spin (which was not observed).

Basically, Bialy and Loeb consider the possibility that 'Oumuamua could in fact be a light sail, a form of spacecraft that relies on radiation pressure to generate propulsion – similar to what Breakthrough Starshot is working on. Similar to what is planned for Starshot, this light sail may been sent from another civilization to study our solar system and look for signs of life. [...]



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