![Stott Hartmann](https://media.azpm.org/master/image/2017/6/15/hero/stott_hartmann_spot.jpg)
Sara Hammond, AZPM
Tucson recently was the scene of a space invasion, with former astronauts, space artists, scientists, fiction writers and space geeks here for the eighth edition of Spacefest.
![Nicole Stott](https://media.azpm.org/master/image/2017/6/15/view-larger/nicole-stott_hero.jpg)
Sara Hammond, AZPM
Festival participants
Kara Sircy of Knoxville, Tennessee, the daughter of a former Space Shuttle contractor and space "fan girl."
James Hansen, a history professor at Auburn University in Alabama and author of the only authorized biography of Neil Armstrong, "First Man."
Nicole Stott, a two-time astronaut and now a space artist.
Riki Goss, a 10-year-old from Santa Barbara, California, who is interested in the mysteries of space.
Emily Carney of St. Petersburg, Florida, an author and founder of the Facebook group Space Hipsters.
This story is from the Arizona Science Desk, a collaborative of the state's public radio stations, including NPR 89.1. Read more from the Arizona Science Desk.
By submitting your comments, you hereby give AZPM the right to post your comments and potentially use them in any other form of media operated by this institution.