3 explanations for ‘Oumuamua that aren’t alien spaceships

Possibilities for the interstellar object include a fluffy fractal and a comet skeleton


HITTING THE GAS  ‘Oumuamua had its foot on the accelerator as it left the solar system. Some astronomers think the object was spewing jets of gas, as shown in this artist’s illustration, although there’s no evidence of that. Others think it was pushed by radiation from the sun.


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