How Do Glow-in-the-Dark Stars Work?

by Esther Iranyi March 23, 2022

glow in the dark stars in a bedroom with little child hiding a large glowing star - Stella Murals

Have you ever wondered how glow-in-the-dark stars work? Discover the secret behind their luminous magic.

The Power of Phosphors:

At the heart of glow-in-the-dark stars lies a special material known as phosphors. These phosphors possess an amazing ability to absorb light energy and later release it as a gentle glow. Think of them as tiny energy reservoirs just waiting to shine!

Charging Up with Light:

To activate the glow, glow-in-the-dark stars need to be charged with light. When you expose them to a light source, such as natural sunlight or artificial light, the phosphors soak up the light energy like water soaks into a sponge.

Energy Storage:

Once the phosphors have absorbed the light energy, they hold onto it tightly within their atomic structure. They store it, like little powerhouses, until the lights go out and darkness takes over the scene.

The Glow:

When the room darkens, the stored energy within the phosphors is gradually released. The phosphors emit the absorbed light energy as a soft, glow. The stars come alive!

Glow Duration:

The duration of the glow depends on factors like the quality of the glow-in-the-dark product and the amount of light it absorbed during the charging process. Higher-quality stars store more energy, resulting in a longer-lasting glow.

Charging Methods:

You might be wondering how to charge up your glow-in-the-dark stars. It's easy! Natural light sources, like sunlight, work really well. Place your stars in a room with a window during the day to allow them to absorb the sun's energy. Alternatively, artificial light sources such as lamps, ceiling lights or flashlights can also charge them effectively. 

Fluorescent lights, CFLs, bright LEDs are recommended. UV tubes and black lights can also be used but these are not ideal for use in kid's bedrooms. 
Incandescent bulbs do not charge well and are not recommended.


You will find your stars are less bright towards the morning time, but don't worry! You can easily recharge them. Expose the stars to light again, and they will eagerly soak up the energy to regain their glow.

Glow-in-the-dark stars bring magic to any space. Through the power of phosphors and the interplay of light and darkness, they create a mesmerising glow that can transform your surroundings into a celestial realm. So, whether you're stargazing in your own bedroom or adding a starry dreamscape to a child's room, let the captivating glow of stars illuminate your home!

Esther Iranyi
Esther Iranyi


Leave a comment

Comments will be approved before showing up.

Also in Blog

meteor shower new zealand, shooting stars in the early morning sky
Which Meteor Showers can be seen in New Zealand?

by Esther Iranyi December 08, 2023

Read More

beautiful wall mural in a dark blue bedroom with glow in the dark stars
Do I Need to Paint my Ceiling Black for Glow in the Dark Stars?

by Esther Iranyi December 04, 2023

Read More

Leo constellation, with radiant stars in the night sky. The lion's majestic mane and the constellation glow, creates a celestial blue glow in bedrooms at night
The Majesty of Leo

by Esther Iranyi November 30, 2023

Read More