COSine 2026

General SF fan-run convention with an emphasis on literature (reading/writing/publishing and science, liquid nitrogen ice cream social, panels, participatory programming, hospitality con suite, book raffle, and more. Embassy Suites by Hilton Colorado Springs, 7290 Commerce Center Dr., Colorado Springs, CO; 719-599-9100 • Ask for the special COSine convention rate when reserving your room.