Excuse me if I don't know something that everyone else knows; I have not followed Destiny for a while.
So if we are truly able to travel throughout the solar system, how exactly would we go to gas giants like Jupiter and Saturn? They are nothing but gas and have no solid ground. Perhaps we go to their moons? (How awesome would it be to look up in the sky and see Saturn and its rings?) I like the idea of being able to land on some of the larger moons of these planets.
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Moons, and also they could have flying stations in the gas giants atmosphere (like the gas refinery in Halo 2 or cloud city).