if it is a probe it's a long time getting anywhere.
solar sails are about the slowest form of space propulsion there is.and the further from a star they get the slower they go.
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if it is a probe it's a long time getting anywhere.
solar sails are about the slowest form of space propulsion there is.and the further from a star they get the slower they go.
Yeah, I thought the same. If it was an alien probe, it would probably have a very advanced technology. Solar sails seem like a trivial technology for any would be advanced extraterrestrial civilisations.
possibly it was something tossed overboard by an interstellar ship? Kinda like a piece of toilet paper??