[5] The 2025 convention was cancelled, but the organizers “fully expect to return in 2026.”[6] The programming is a typical fan convention, including panel discussions on writing, science, fantasy, gaming, and craft workshops, a games room, and a dance event.
The HELIOsphere 2017 Guests of Honor were writers Jacqueline Carey, David Gerrold, and Danielle Ackley McPhail.
Guests of Honor were Eric Flint, Charles Gannon,[12] Cecilia Tan, and Mark Oshiro.
HELIOsphere 2019 took place April 5–7, 2019 at the DoubleTree by Hilton hotel in Tarrytown, New York.
Guests of honor were Charlie Jane Anders, Laura Antoniou, and Tom Smith, with featured artist Alan F.