So I received warning of the green hazard, and went to a path the lessened how much i went through not knowing it would insta kill my T4 with leveled crew. Pathing should go around that sort of thing unless you specifically click into it. Or the damage has to be lessened severely as my ship didn't take damage and stop, letting me choose to not go through it, instead it just took all 35 points of hull off and i exploded not knowing why until i asked on off topic.
There's a warning the first time you get proximate to any environmental hazard, but it does put a hold on your ship the first time you attempt to cross something like that. There's actual reasons why you would go through the radiation, and its the only one that does damage. However, I refunded your ship XP loss to your account now.