That's something I've always wondered about
Two things, actually:
(1) Which other nearby stars came from the same stellar nursery as Sol?
(2) Where, if there is one, is the remnant of the supernova that triggered the collapse?
Now I understand: we couldn't determine an answer to #1 until now. The results will be fun to know, especially if some of them turn out to be visible in our sky -- or better still, old familiars.
Does #2 have an answer?