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Re:Could 'Oumuamua be an icy fractal aggregate ejected from ... by rbanffy on Wednesday February 20, 2019 @10:43AM (#19208718)
My bet would be an RTG powering a dozen electric thrusters packing a lot of propellant and a relatively small probe.

Still, it'd mean reaching Uranus' orbit in about a year. That's a lot to ask for.

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