Can anyone recommend any decent Space Exploration type games

An anyone recommend any decent space exploration games, where you can trade, battle etc etc..

 

Galaxy on fire 2
Dead space
Mass effect

I'd say galaxy on fire 2 is probably the most suited for 'space exploration' it's brilliant!
The other two are more 'shoot em up' based in space.

But I'd say all three are probably the best iPad games on the whole app store

 

Hey thanks for the post, got galaxy on fire 2HD and is very good from what I've played so thanks for the recommendation if you know of anymore open world space exploration or even any MMO space exploration games then give me a heads up