Why do you need to take out your spaceship from Cometh V1 Galaxy?
First of all, there are no more rewards distributed in Cometh V1. If they are located in the galaxy, you cannot use them anywhere else. You need them to be located in your wallet to play Cometh Battle and to be able to list them on the rental marketplace.
How to proceed?
1 - head over to https://game.cometh.io
2 - connect your wallet
3 - click on enter galaxy
4 - click on the menu
5 - click on leave galaxy
6 - click on approve
7 - approve transactions in your wallet
8 - your spaceship is now in your wallet, you can directly view it in Cometh Battle