UV-Reactive Bracelets + Keychains: Discover the Science of Sunlight!

Discover the colorful science hidden in sunlight! Join us for a hands-on space festival activity that explores the amazing science of ultraviolet (UV) light.

Have you ever wondered what sunlight is made of or why some materials change color when they're exposed to the sun? Become a sunlight detective as you investigate invisible UV light through fun, interactive science. Then create your own UV-reactive bracelet or keychain to take home and watch it change color whenever it's exposed to sunlight!

What to Expect

Explore the Science of Sunlight

Discover what sunlight is made of and learn how invisible ultraviolet (UV) light can cause special materials to change color.

Create a UV-Reactive Keepsake

Design and make your own UV-reactive bracelet or keychain. Take it home and continue experimenting by watching it change color when exposed to sunlight.

Science for Everyone

This activity is designed to be accessible and engaging for a wide range of ages. Different levels of challenge can be adapted so everyone can participate and explore the science of UV light.

Why You'll Love It

☀️ Discover the Science of Sunlight – Learn how invisible UV light affects the world around us.

🌈 Watch Colors Come to Life – See UV-reactive materials change color right before your eyes.

🎨 Create Something to Keep – Make a bracelet or keychain that lets you continue exploring the science of UV light at home.

🚀 Space Festival Fun – Explore the science of sunlight as part of a weekend celebrating space, STEM, and science.

👨👩👧👦 Fun for All Ages – Curious kids, families, and science enthusiasts can all join in the investigation.

Event Details

Cost: $9

Ages: All ages welcome

Format: Hands-on, drop-in activity

Part of: Space Festival

Come investigate the hidden science of sunlight, discover the power of UV light, and create your own color-changing space-themed keepsake!

Getting Here & What to Expect:
All events take place inside the Craft Lab at Because Science, our retail shop located at 1759 Columbia Rd NW, Washington, DC (across from the Line Hotel in Adams Morgan).

 Look for the squiggly rainbow mural! Enter Because Science and walk to the back of the store (between the biology and anatomy sections) to find the entrance to the Craft Lab
 Metro: We're a 10-minute walk from the Woodley Park (red line) or Columbia Heights (green line) Metro stations.
 Bus: The D72, D74, C51, and C53 buses stop nearby.
 Parking: Street parking is mostly limited to 30 minutes—walking, biking, or ride share is recommended. There is a parking garage located at 2421 18th St NW, about a block away. 

If you’re running late or need help finding us, just call the store at 202-248-1366