Protection levels

Players cannot hit other players that are under 40% of its own level
(note: special servers can use different percentage, the speed universe for instance use 30%)
Example, if your level is 30, -40% = 18, you cannot hit any player bellow 18
 
If you hit a player above the 40% of your level outside your bases, you will lose the protection for 72 hours
New bases cannot be hit in their first 48 hours
Any ships at empty astros or bases from other players, can be hit by anyone