Aside from the obvious affects of running into asteroids, planets and the like....what are the dangers of some of these other items? I can't even remember anymore...
The planets are harmless because they are the "0" variants in the shiplist including the moon (ie. PL0 thru PL17 in shiplist.txt). Of course, some sneaky Admin. might just put some weapons on them in the shiplist.txt and then you'll need to watch out.
The sun will do shield damage when you get too close. Most Asteroids have dust clouds. 3 types of asteroids can be generated: small, large and ice. There is also the moving asteroid N-AST that won't move cuz I'd have to pick a side to put in on. For GW3, I ran out of time in figuring out a solution to get the asteroid moving when it's in Neutral mode. Again some sneaky Admins. might put weapons on the N-AST asteroid. :O
Ion Storms will do damage when you go through them but you can hide in there cuz it's hard to see a ship in an Ion Storm, in F3 view at least. Pulsars and Space/Time fissure are no-damage light baubles. Maybe later, some scripting stuff can be put in to make them do stuff. But, you can hide from the enemy in F3 view at least by going through them and keeping them between you and your enemy.
PS. Something I will absolutely need to put in the next EEK-Readme.txt of the next EEK mission pack is that the following shiplist.txt items must be defined:
N-AST, PL0, PL1, PL2, PL3, PL4, PL5, PL6, PL7, PL8, PL9, PL10, PL11, PL12, PL13, PL14, PL15, PL16, PL17.
They originate from the stock shiplist.txt so it should never be an issue.