Astronomy Day 2026
*The event has already taken place on this date: Sat, 04/25/2026
Celebrate International Astronomy Day at The Franklin Institute. Spend the day unlocking the mysteries of the universe across four floors of out-of-this-world experiences, including the two-story Wondrous Space exhibit, Fels Planetarium, and the Holt & Miller Observatory.
Please help us keep this calendar up to date! If this activity is sold out, canceled, or otherwise needs alteration, email mindy@kidsoutandabout.com so we can update it immediately. If you have a question about the activity itself, please contact the organization administrator listed below.
Celebrate International Astronomy Day at The Franklin Institute. Spend the day unlocking the mysteries of the universe across four floors of out-of-this-world experiences, including the two-story Wondrous Space exhibit, Fels Planetarium, and the Holt & Miller Observatory.
Featured Programming:
- Solar Viewing in Science Park: Safely view the sun with telescopes and custom solar-viewing tents.
- Space Suit Show: Do you have what it takes to visit space, or at least dress the part? Learn the ins and outs of a space suit to prepare you for your future travels.
- Explosive Trash Can Rocket Launch Finale: See science performers launch a 40-gallon trash can into the sky using our favorite ingredient, liquid nitrogen.
- Special Guest: Chief Astronomer Derrick Pitts
The Franklin Institute is proud to participate in International Astronomy Day 2026, a day dedicated to promoting interest in astronomy and providing opportunities for people of all ages and backgrounds to experience the beauty, mystery, and inspiration of the universe.
Outdoor programming is weather permitting.
Location:
The Franklin Institute, North 20th Street, Philadelphia, PA, USA
See map: Google Maps
*Times, dates, and prices of any activity posted to our calendars are subject to change. Please be sure to click through directly to the organization’s website to verify.
The event has already taken place on this date:
04/25/2026
Time:
11:00AM - 3:00PM
Price:
$23 for Children 3-12, $25 for Teens 13-17, $29 for Adults 18+
Ages
Adults & kids togetherWeb Service