Beyond the gas giants lie the icy worlds of massive Uranus, then Neptune and tiny 134340 Pluto. The denizens thereupon use liquid gasses instead of water. It's cold out here! What problems for all involved, will be faced in the encounters? Will orbital artificial sun of the Earth, pose a danger to the denizens Uranus, Neptune and Pluto? Perhaps the Moon can be deployed as a shield, somehow?