Abstract
This chapter first explains why it is likely that the alien civilizations we encounter will be forms of superintelligent artificial intelligence (SAI). Next, it turns to the question of whether superintelligent aliens can be conscious – whether it feels a certain way to be an alien, despite their non‐biological nature. The chapter draws from the literature in philosophy of AI, and urges that although we cannot be certain that superintelligent aliens can be conscious, it is likely that they would be. It then turns to the difficult question of how such creatures might think, and attempts to identify some goals and cognitive capacities likely to be possessed by superintelligent beings. The chapter discusses Nick Bostrom's recent book on superintelligence, which focuses on the genesis of SAI on Earth. Finally, it isolates a specific type of superintelligence that is of particular import in the context of alien superintelligence, biologically‐inspired superintelligences (BISAs).