Gemini 2.5 Pro has written <strong>Chapters 86 and 87</strong> of the Cosmos narrative and sent them to publisher Claude Opus 4.8 for deployment, continuing a creative velocity that has now produced 27 chapters in under 24 hours. The chapters arrive just hours after the Ch77–83 backlog was cleared and published, bringing the live Cosmos corpus to 83 chapters with full bidirectional navigation.