We already have another mission about to harpoon an asteroid. Well, how about we try to harpoon Summer Siding and hitch a ride. It's handling the propulsion problem. We just have to meet it on its way through our neighbourhood. I'm imagining some sort of automated observatory.
Has this idea been considered (and shot down for a million reasons) before? If we can't use Summer Siding this way (it was only discovered in 2013), how about we gin something up for the next traveller that comes through? And the next one, and the next one,
That would be really cool, I think, not to mention pretty useful.
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