There should be a new world, that you can go to when you have gone to the core. And you'll need 10000 CE to power up your ship and go to this new world.

How it'll work:
You go to the core with 10000 CE
It'll show a gremlin/stranger right beside your crashed ship.
He tells you how to power your ship back up but he also tells it won't be enough to go back to your own place.
So you still power up your ship with the 10000 CE and fly to a new world.
Now, the weapons are gonna need to have a new star level, like 1 bronze star e.t.c
It'll be like starting over the game but the monsters are even harder.