speaking of blown away ...
How would we, and indeed top notch boffinry, know whether or not, over the many billions of years, it ever had a third rock attached (attracted) to it, a rather lengthy (relative) sausage shaped rock?
That maybe got broken off by an errant, angry passing female rock? Such force that it resulted in the ejection of 100's of millions of tiny rockettes that went on to seed other planetary formations.
(Self edit : Stop NOW)