This paper outlines a moral commitment to future species, which encompasses manufactured, by-products of humanity, along with the development of new life forms by synthetic biology, enhanced humans and non-human animals, and the possible discovery of new life forms (both native to Earth and foreign). It fashions the concept of extraterrestrial ethics as a critical response to and extension of bioethics and environmental ethics, where the emerging language of ecosystem health expresses a broad commitment to planetary well-being. Less