Astrochristology, as a subfield within the more comprehensive astrotheology, speculates on the implications of what astrobiology and related space sciences learn about our future space neighbors. Confirmation of the existence of extraterrestrial intelligent civilizations living on exoplanets will force Christian theologians to decide on two issues. The first issue deals with the question: should Christians expect many incarnations, one for each inhabited exoplanet; or will the single incarnation in terrestrial history suffice? The second issue deals with the question: why is (...) there an incarnation in the first place? Does the divine presence in the historical Jesus mark a divine attempt to fix a broken creation or does it mark a divine self-communication that would occur with or without creation's fall into sin and death? Sorting these issues out is one task for astrochristology. My own position is to affirm both a single incarnation on Earth valid for cosmic redemption from the brokenness of creation in its present state. (shrink)