There is a multifaceted relational revolution afoot in International Relations (IR) and in the social sciences more widely. This article suggests, via engagement with varied forms of relational thought and practice in IR, but in particular via engagement with ‘relational cosmology’ associated with the ‘natural’ as well as the ‘social’ sciences, that there are important reasons for relational thought and practice in IR and around it to be more attentive to dialogues on relationality across natural and social sciences. If relational thought in IR has challenged the colonial and bifurcated ontologies of the field, relational cosmology too assists in shifting ‘modern’ understandings of science and the cosmos by facilitating engagement with situated knowledges and deep-going relationalities across ‘nature’ and ‘society’, ‘human’ and ‘non-human’ communities. Relational cosmology may be productive in joining, and perhaps even in facilitating, conversations across multiple relationalities emerging from different parts of the world and in different fields of inquiry, and yet – reflecting its relational and pluriversal orientations – it is not proposed here as a new ‘meta-‘ or ‘grand-’ narrative for relational theorising or IR.

在国际关系（IR）和更广泛的社会科学领域，一场多方面的关系革命正在发生。本文建议，通过参与国际关系中各种形式的关系思想和实践，特别是通过与“自然”和“社会”科学相关的“关系宇宙学”，关系思想有重要的原因并在 IR 及其周围进行实践，以更加关注自然科学和社会科学之间的关系对话。如果 IR 中的关系思想挑战了该领域的殖民和分叉本体论，那么关系宇宙学也有助于通过促进与情境知识的接触以及跨“自然”和“社会”的深入关系来改变对科学和宇宙的“现代”理解, “人类”和“非人类”社区。关系宇宙学在加入，甚至可能促进来自世界不同地区和不同研究领域的多种关系的对话方面可能是富有成效的，但是——反映它的关系和多元取向——它并不是在这里提出的一种新的关系理论或 IR 的“元”或“宏大”叙事。