Abstract

This review essay contrasts two of the most notable recent contributions to literature on space and society: Daniel Deudney's Dark Skies (2020) and Brian Patrick Green's Space Ethics (2022). The Green volume is a course textbook, geared to giving students an overview of some of the key ethical issues concerning space and how the arguments on these matters are shaping up. Its aim is to provide an overview rather than a specific line of argument. Deudney's text, by contrast, is an example of a book proposing space skepticism. It argues that we should relinquish many of our current ambitions for space expansion on the grounds that they will increase the already significant degree of extinction-level risk that we face. The essay marks the distinction between these texts by contrasting normal- and special-domain approaches. Normal-domain approaches seek to extend familiar ethico-political issues into the discussion about space expansion without regarding space expansion as the road to utopia or extinction. Special-domain approaches hold to some such optimistic or pessimistic view. The essay goes on to highlight the way in which Green's text would benefit from more social critique, along the lines of Deudney. Ultimately, the normal-domain approach presupposed by Green and rejected by Deudney is upheld.