Utopia is a place of longing but also a place that is hard to get to. It is even supposed to be just out of reach as not to disturb its aura of ideality that makes it worth longing for. This is the basis for critique in the classical literary genre of ‚utopias' and also for the criticism of utopian thinking as what the Germans call a ‚Wolkenkuckucksheim' (a cuckoo's nest in the cloud). This paper takes a look at modern utopias that are connected to a place that is especially hard to get to: Outer Space. Besides having been a central topic of science fiction for more than a century, it has recently become an interest of concrete political utopian thinking. Most prominently, it is Elon Musk who has proposed Mars as the 'topos' of his 'utopian' (anarcho-capitalist, libertarian) new society. His concept frames Mars as a potential refuge for (selected parts of) humanity if or better when our planet becomes uninhabitable, in face of (for example) the environmental crisis. In this framing, we can see a soteriological structure in Musk's thinking. Thus, theology can't ignore the question of how Christian soteriology and eschatology - culminating in the concept of the Kingdom of God - relates to utopian thinking. A decisive difference resides in the fact that the Kingdom of God is a Kingdom to come, not one to go to. But, this covers only one of the dimensions of the utopian genre as mentioned above. What about the dimension of critique of present conditions? This contribution will show that soteriology and eschatology can be related to this latter, critical logic of utopia if considered in a topological framework. If the core of soteriology is the promise of a redeemed life in Christ and his kingdom already now as well as in the promised eschaton, it can be seen as living in a 'place' that is never fully reached, but only exits in relation to our 'place' in this life which it constantly calls in to question. This will be shown as a strictly utopian setting.