HELIOsphere, started in 2017 is sponsored and run by NASF3, New Amsterdam Science Fiction and Fantasy Fandom, Inc.
|HELIOsphere 2017||March 10-12, 2017||Jacqueline Carey, David Gerrold, Danielle Ackley-McPhail, Charles Gannon, Heidi Hooper|
|HELIOsphere 2018||March 9-11, 2018||Eric Flint, Charles Gannon, Cecilia Tan, Mark Oshiro, Tom Kidd|
|HELIOsphere 2019||April 5-7, 2019||Charlie Jane Anders, Laura Antoniou, Tom Smith|
|HELIOsphere 2020||CANCELLED (April 3-5, 2020) (Moved Online)||Peter David, Kathleen O'Shea David|
|HELIOsphere 2021||April 9-11, 2021||Seanan McGuire, Peter David, Kathleen O'Shea David|
Also involved: - Heliosphere - Heliosphere 2020 - Heliosphere 2021 - Mark W. Richards - New Amsterdam Science Fiction and Fantasy Fandom - New York, NY
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