COSine 2025
COLORADO SPRINGS SCIENCE FICTION CONVENTION
January 24-26, 2025
Guest of Honor
Lawrence WATT-EVANS
Award-winning Author; The Ethshar Series, Annals of the Chosen, and many more
Science Guest of Honor
TBA
Someone very sciency!
Artist Guest of Honor
Theresa Mather
Cryptopictographer
COSine has been held in Colorado Springs since 2004, and features numerous sci-fi and fantasy authors, artists, and fans, as well as panels, art show, author signing & reception, gaming, science & technology, dealers room, kids’ programming, liquid nitrogen ice‑cream, and more!
Embassy Suites by Hilton Colorado Springs
7290 Commerce Center Drive, Colorado Springs, CO 80919
719-599-9100 • map
Ask for the special COSine convention rate when reserving your room!