>>41010032
Omuamua did. Maybe the first one was the scout, and this one dropped some probes on Mars when the earth was on the other side of the sun to block the view.

>>510011592
Also sped up upon exiting the solar system, but showed no apparent signs of outgassing from the sun heating it up causing the expelled gasses to increase its speed. Still possible, but one more anomaly that adds to its strangeness.

>>509019800
I mean they can say "it was just a weird shaped rock that took a weird angle because of outgassing or something"

but c'mon
it did a fucking perfect flyby of the points of interest and got out just as clean

the odds of this happening with some random space debris that just so happens to have the shape it did
that's astronomical