Northstar

You have a cause — The woman who brought you into the world is lost in the big dark, and everyone who can do something about it says it was her fault.
Your Mother, a 2 mile long Spirit class tradeship, an 830 person crew — gone, without a trace.
Because she screwed up.

Not bloody likely.

But the only one left to prove otherwise is a self-indulgent, slacking ne'er do well — her son — you.