Why do people think that you implode in space? lol! 😄
You explode! Violently!
That's because there's NO pressure all around you (space is a vaccuum) and there IS pressure inside u. Hence the pressure inside u expands to fill up all the avilable space - i.e. infinity. 🙂
And Vader would destroy Logan in this fight.
I could picture Wolvie taking a running jump at Vader, claws out ready for the disembowelling about to occur, when.... nothing!
He hangs, fixed and paralysed in midair, ready for Vader to slice off his flesh with his sabre (sabres cauterise, so I doubt he could regenerate) or he could simply choke him to death with the force.
Logan wouldn't be able to get close enough to Vader to do any damage at all.