<p>This article examines astrocide, defined as the prospective crime of destructive exploitation and/or total annihilation of celestial bodies, planetary ecosystems, and extraterrestrial life, as both a criminological label and, potentially, an emergent legal category. Building on labelling theory, we treat astrocide as a label-in-formation, exploring how narrative, symbolic, and anticipatory work can make future or potential cosmic harm legally intelligible. Drawing specifically on prospective space criminology, we argue that the astrocide label is not merely descriptive but also generative, as it structures our understanding of space expansionism, responsibility, and trans- and interplanetary harm, allowing for preventive foresight. Based on the astrocide label, we will instead of criticizing its labelling, actually “dramatize,” stigmatize and criminalize it, followed by a prospective legal categorization that is grounded in Raphael Lemkin’s prospective criminalization of genocide. By focusing specifically on astrocidal intent, we then want to demonstrate how a speculative jurisprudence of astrocide could be developed, using Ursula K. Le Guin’s The Word for World Is Forest. This way, we confront harms that go beyond current legal vocabulary, while demonstrating how, within these dynamics of off-Earth erasure and reclamation of environment, life, and value, they can be interpreted as crimino-legal thought experiments. Also, by bridging labelling theory, narrative, dys/utopian science fiction, criminology and law, we want to advance the interdisciplinary study of labelling in criminal justice, highlighting the role of (criminologically) imaginative, anticipatory, and semiotic practices in shaping emergent legal categories for planetary and extraterrestrial governance, enforcement and judiciary.</p>