"Needle ships" are a common trope in science fiction, ships whose long and narrow needle shape presented the smallest cross-section to the interstellar medium. They also tend to be very large, hundreds of kilometers long, to house those Mighty Engines in a small internal volume.

Where I'm going doesn't have to involve ships. Wouldn't you think that a natural object that had been travelling through interstellar space for a long time, possibly millions of years, at a respectable speed, might have been abraded down to that shape?

It's also speculated that if we but watch closer, we'll spot more of these ISOs. So if the second and third turn out to have that characteristic shape (and we confirm they're not actually "needle ships" by close-up observation using probes waiting for the sightings, next time), that might confirm my idle notion,.

The next one might be a lumpy potato. Hope not.