Search for Science Fair Projects

1000 Science Fair Projects with Complete Instructions

Astronomy Science Fair Project

Galaxy in a Bottle

Galaxy in a Bottle | Science Fair Projects | STEM Projects
The Milky Way is a sparkling band of light made of gas, dust, and billions of stars. Recreate its beauty in a jar with water, tempera paint, glitter, and cotton balls. Shake it and observe the calming glow that resembles the night sky.


The hypothesis is that it is possible to create a glowing galaxy in a bottle that looks like the night sky.

Method & Materials

You will add layers of water, tempera paint, glitter, and cotton balls to a jar to recreate a mini Milky Way. Then, shake the jar to observe the calming glow.
You will need a clear glass jar with a lid, water, tempera paint in gray, black, blue, and purple, glitter, cotton balls, and a spoon.


When you shake the galaxy jar, it creates a calming and mesmerizing effect. This project allows you to observe the beauty of our galaxy up close and can inspire a love for astronomy.

Why do this project?

This science project is interesting because it teaches about our galaxy in a fun and creative way. Plus, it's a great sensory STEAM project that engages kids' creativity.

Also Consider

1) Try adding glow-in-the-dark paint to the mixture for an extra glowing effect. 2) Instead of cotton balls, try using small plastic planets to make it more realistic.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!

Related video

Hey there! Here are some awesome videos about this science project that we think you'll really like. They're not only super fun, but they'll also help you learn more about the science behind the project. So sit back, relax, and get ready to have some fun!!
Check out the video in the project page link to see how to make a galaxy in a jar! The following video is almost the same, but uses different colors to make a nebula, a giant cloud of dust and gas in space. Have fun!
Share this Science Project:

Related Science Fair Project Ideas

How Many Earths Fit Across the Sun?
Have you ever wondered how big the Sun really is? See how many Earths can go across the Sun!
Play-doh Solar System Scale Model
Explore our solar system with Play-doh! Make a scale model of planets and moons and learn about their size and distance from each other.
Solar System Model with Foil, Play dough and a Balloon
Build a mini version of our solar system with planets made from play dough or foil and a balloon sun. Discover the wonders of space!
Share this Science Project: