Rynar

Rynar is a fictional planet featured in the science fiction novel "The Mote in God's Eye" by Larry Niven and Jerry Pournelle. It is the homeworld of the Moties, an alien species with a complex and highly evolved society. Rynar is depicted as a densely populated world, with its inhabitants living in vast subterranean cities due to the harsh surface conditions. The planet's ecosystem is finely balanced, a result of the Moties' long and intricate history of environmental management.

The Moties are characterized by their unique biological imperative, which drives them to reproduce and expand relentlessly. This has led to a cyclical history of societal collapse and rebuilding on Rynar, with technological advancements often being lost and rediscovered. Their civilization is highly stratified, with distinct castes performing specialized roles. Despite their advanced technology, the Moties face existential challenges stemming from their own biological drives and the limited resources of their homeworld. The exploration of Rynar and its inhabitants is a central element of the novel, as humanity grapples with the implications of encountering such an alien and potentially dangerous species. The planet's environment and the Moties' society are intricately linked, showcasing a unique example of alien world-building in science fiction.