when you start filling up your slots 1 slot is a lot. specially when you can not purg them... one becomes 2 and sooner or later you have 5 10 slots filled with panets you can not invade or remove!!!!

I doubt anyone would scan that many, but anyway. You or someone probably has despite my previous sentence and like I say 10 slots is still not an awful lot. What I think Dan should do is just let you purge them.

Planets with the ‘invincible’ passive ability can now be targeted and viewed, but they still cannot be attacked or invaded. Artifacts such as the ‘Star Chart Purger’ can now be used on them. That's from the november update of last year...

Now we all want to find invincible planets and colonize them, but we all know it's not gonna happen anytime soon, a way to avoid this would be to double the passive cloak once a player goes inactive longer then a couple of months, would probably stop/severely limit the amount of people who could scan them and avoid having to purge them in the first place.

Considering the highest scan is 18-19k then yeah. Pretty hard.