Mark Johnston

NASA Solar System Ambassador

Mark is Vice President of the Phoenix Astronomical Society, a NASA Solar System Ambassador, a member of the Percival Lowell Society, an ACEAP Ambassador and a Telescope.live Tutor and Ambassador.  He has earned a Master of Outreach from the Astronomical League. Based in Scottsdale, Arizona, Mark does over 100 astronomy outreach programs a year at schools, STEM camps, libraries and corporate facilities.

Mark is an APOD astrophotographer whose work is often published in Sky & Telescope magazine, Astronomy Magazine, and on Space.com. Mark (@azastroguy) is very active on social media, where he posts daily astronomy-related content. Millions of people have seen his entertaining and educational posts on Instagram, TikTok, Facebook, YouTube and Threads.