Kids love the idea of exploring outer space, so today, I am going to show you how to make galaxy slime with kids. Homemade slime is awesome to play with, and even easier to make than you think! Just follow our simple galaxy slime recipe below to get started.

How To Make Galaxy Slime Recipe for Space Slime, Solar Eclipse Activities, and Science for KidsPin

What Color Is A Galaxy?

This is a great question and adds another element to our slime! We did some research of what galaxies might look like!

A galaxy is a collection of billions of stars, dust, and gases held together by gravitational forces. The earth and the rest of the solar system are all part of the Milky Way Galaxy.

YOU MAY ALSO LIKE: Space Activities For Kids

ALSO CHECK OUT: Watercolor Galaxy Painting

I asked my son what he thought the colors of a galaxy might look like, and he was super excited to check out real photos. There are always one or two ways you can extend the learning behind a slime-making activity! See some of the colors we created for our galaxy slime below.

Watch the Video:

Galaxy slime for kids with confetti using clear glue slime recipePin

Galaxy Slime Recipe

We made several batches of different colored slime to swirl together to make glitter galaxy slime!

Note: I used 1/2 the quantity of the recipe below for each galaxy color and a full recipe for the black slime.

SLIME TIP: To get the mix started, try laying out each slime as seen above! It’s a similar method to our cotton candy slime.

YOU WILL NEED:

  • 1/2 cup Clear Washable PVA School Glue {3-4 bottles}
  • 1/2 cup Water
  • 1/4 cup Liquid Starch
  • Food Coloring
  • Glitter/Iridescent Confetti Stars {optional but fun!}

*We used a separate plastic cup and craft stick {dollar store} to mix each color for easy cleanup!

Slime supplies to make galaxy slime recipe for kids activitiesPin

Instructions:

STEP 1. In a bowl mix 1/2 cup water and 1/2 cup of glue, and stir to combine completely.

STEP 2. Now’s the time to add your food coloring and other add-ins. Mix the color into the glue and water mixture.

STEP 3. Add in 1/4 cup of liquid starch. You will see the slime immediately start to form. Keep stirring until you have a gooey blob of slime. The liquid should be gone!

STEP 4. Start kneading your slime. It will appear stringy at first but just work it around with your hands and you will notice the consistency changes. You can also put it in a clean container and set it aside for 3 minutes, and you will also notice the change in consistency!

You definitely want to make a big portion of the black slime. We added both silver glitter and iridescent confetti stars.

black slime for galaxy slime and space slimePin

The galaxy slime we chose to make had hints of fuchsia…

galaxy slime recipe with pinks, oranges, blues, and purplesPin

mixed with hues of purple….

Clear glue slime recipe with purple food coloring to make galaxy slimePin

with a gorgeous orange swirl and turquoise blue. My son was amazed by the beauty of it all.

Orange clear glue and glitter slime recipe for galaxy slimePin

You can see I took a whole lot of photos of this cool slime activity! I love to show how it shimmers, stretches, mixes, and oozes. Is it a liquid or a solid? Slime science is chemistry and it’s cool!

Make galaxy slime recipe for mixing and playing with space slimePin

If you have the space and the patience, how far can you get the slime to stretch? In my opinion the saline slime recipe is the stretchiest!

stretchy galaxy slime recipePin

A Bit Of Slime Science

We always like to include a bit of homemade slime science around here! Slime is an excellent chemistry demonstration, and kids love it too! Mixtures, substances, polymers, cross-linking, states of matter, elasticity, and viscosity are just a few science concepts that can be explored with homemade slime!

What’s slime science all about? The borate ions in the slime activators (sodium borate, borax powder, or boric acid) mix with the PVA (polyvinyl acetate) glue and form this cool, stretchy substance. This is called cross-linking!

The glue is a polymer of long, repeating, and identical strands or molecules. These molecules flow past one another and keep the glue liquid. Until…

You add the borate ions to the mixture,  and it then starts to connect these long strands. They begin to tangle and mix until the substance is less like the liquid you started with and thicker and rubbery like slime! Slime is a polymer.

Picture the difference between wet spaghetti and leftover spaghetti the next day. As the slime forms, the tangled molecule strands are much like a clump of spaghetti!

Is slime a liquid or solid?

We call it a non-Newtonian fluid because it’s a bit of both! Experiment with making the slime more or less viscous with varying amounts of foam beads. Can you change the density?

Did you know that slime aligns with the Next Generation Science Standards (NGSS)?

It does, and you can use slime-making to explore states of matter and their interactions. Find out more below…

Basic Slime Recipes

Our easy, “how to make” slime recipes show you how to master slime in 5 minutes or less! We have spent years tinkering with our favorite basic slime recipes to make sure you can make the BEST slime every time!

We believe slime shouldn’t be disappointing or frustrating! That’s why we want to take the guesswork out of making slime!

  • Discover the best slime ingredients and get the right slime supplies the first time!
  • Make easy slime recipes that work!
  • Achieve awesome slimy consistency the kids’ love!

Which Slime Recipe To Use?

We have several basic slime recipes that can all be used for this amazing galaxy slime recipe. You decide which one works best for you depending on what slime activator you want to use. This allows for some flexibility depending on where you live in the world! Not everyone has access to the same ingredients!

Each of the basic slime recipes below have the full step by step photos, directions, and even videos to help you along the way! Plus, we have added free printable recipes sheets to each one as seen below.

Here we use our Liquid Starch Slime recipe. Slime with liquid starch is one of our favorite sensory play recipes! We make it ALL the time because it is so quick and easy to whip up. Three simple ingredients {one is water} are all you need. Add color, glitter, sequins, and then you are done!

Where do I buy liquid starch?

We pick up our liquid starch in the grocery store! Check the laundry detergent aisle and look for the bottles marked starch. Ours is Linit Starch (brand). You might also see Sta-Flo as a popular option. You can also find it on Amazon, Walmart, Target, and even craft stores.

But what if I don’t have liquid starch available to me?

This is a pretty common question from those who live outside of the United States, and we do have some alternatives to share with you. Click on the link to see if any of these will work! Our saline solution slime recipe also works well for Australian, Canadian and UK readers.

Now if you don’t want to use liquid starch, you can absolutely test out one of our other basic recipes using saline solution or borax powder. We have tested all these recipes with equal success!

NOTE: We have found that Elmer’s specialty glues tend to be a bit stickier than Elmer’s regular clear or white glue, and so for this type of glue we always prefer our 2 ingredient basic glitter slime recipe.

Helpful Slime Making Resources To Get Your Started

These are the best resources to look through before, during, and after making your awesome galaxy glitter slime! We talk more about slime science below too.

More Fun Slime Recipes To Try

If your kids love playing with slime, why not try more favorite slime ideas…

Grab the Ultimate Slime Recipe Bundle

All the best homemade slime recipes in one place with plenty of fantastic extras!

10 Comments

  1. i have a three year old daughter and we love to do arts and crafts together. if you could please send any recipies or ideas for a three old that would be great.. we loved the slime still trying to find time to make the galazy slime but i have conquered the fluffy time. we both had a great time thank yo for all the time and effort you put in your pages.

  2. Search preschool science activities! We loved playing with baking soda and vinegar at that age! We don’t do much in the way of arts and crafts here, mostly science.

  3. Pingback: 15 Amazingly Creative Slime Recipes for Kids
  4. Pingback: Unicorn Slime Recipe Homemade Slime (Free Unicorn Printable Cards)
  5. Pingback: 10 Space Themed Crafts and Activities for Kids That Are Out of This World
  6. Pingback: May Day, Mother’s Day & Other Celebrations!
  7. Pingback: 15 Amazingly Creative Slime Recipes – Cool Home Recipes
  8. Pingback: Space Theme - 123 Homeschool 4 Me
  9. Pingback: Make Saline Solution Fluffy Slime Science Activity for Kids
  10. Pingback: Space Activities For Kids | Little Bins for Little Hands

Comments are closed.