Hello! My friend and I are thinking of applying here, and I had a question about back story/world destruction!

Our characters are both very average boys from Earth in a very realistic setting. We've come up with a plausible way for Earth to go Ka-BOOM!, but we are curious as to how characters like them (with no current access to spaceshippery and being really unfantastical) get from their newly destroyed planet to the S.S. Thor....

Is there a general protocol or is it also something left to our imagination/decision?

Thank you!