[ EU ] Anakin decides to not stop Mace Windu and kills Palpatine

Skywalker strikes down the emperor with his photosword. 
 
 The entire galaxy begins to quake. 
 
 Shaking apart planets and entire stars. 
 
 Dark sided force ghosts of past sith torment the survivors. 
 
 Any jedi could feel this failure. 
 
 `` Why is the dark side so strong now? Why is there so much death?'' Anakin asks no one in particular. 
 
 `` I do n't know! I thought he was too dangerous to let go!'' Mace Windu also panicks. 
 
 Later, they find Yoda. `` What have you learned of the force, hmm? The force, balanced, it should be. The dark side and the light must BOTH exist to maintain balance. Let loose a dam now. Scower the riverbed now.'' 
 
 `` You ca n't mean, master?'' 
 
 `` All life in the galaxy will die, afraid I am.'' 
 
 `` But master, surely the light side can restore balance to the dark side?'' 
 
 `` Restore it shall. Yes. When most are dead, the last strongholds, the jedi temples will fall next. Cascade it will now. When all life in the galaxy is gone, and the dark side reigns unopposed, will the light start again. Slowly it will, through evolution, all over again. And the jedi will return. But, the galaxy, hospitable in time, it wo n't be.'' 
 
 `` What do we do, master?'' 
 
 `` Save life we must.'' 
 
 They manage to send ships in all promising directions at close to light speed without FTL out from the galaxy in order to seed new galaxies with life capable of the force. One of the human fleet breaks off for a barred double spiral galaxy and finds a nice backwater planet, 3rd from its yellow star.
