⭐ Rosson House at The Square PHX: Galaxy STEM Fest 2026

Get ready to blast off into the future at Galaxy STEM Fest! Join us on Saturday, April 18th for our FREE, family-friendly festival celebrating the intersection of STEM and history at Heritage & Science Park in Downtown Phoenix. This great community event features local vendors and nonprofits, hands-on activities for all ages, thrilling demonstrations, delicious food trucks, and more!       Arizona SciTech Festival Season is here! We hope to see you in many of the Festival’s events all over Arizona. Check out the calendar!