Hey there! If your kiddo has recently developed an obsession with all things outer space, you know the drill by now. We’re talking about answering twenty questions about black holes at dinner, stepping on rogue astronaut figurines in the middle of the night, and watching Wall-E so many times you can recite the dialogue in your sleep.
I have been there. My living room currently resembles a mission control center made of cardboard boxes. But instead of just buying more glow-in-the-dark stars (seriously, I think we have enough to form our own spiral galaxy), I started hunting for ways to channel that cosmic curiosity into actual activities.
So, whether you are a seasoned space-exploration parent or you just need a break from explaining why you can’t actually visit the sun, I’ve got you covered. Here are ten galaxy-themed activities that will keep the little astronauts busy without requiring you to have a PhD in astrophysics.
1. Create a Mason Jar Galaxy
Ever looked at a jar and thought, “Hmm, this needs more sparkle and a touch of infinite universe”? No? Just me? Well, trust me on this one. This activity is ridiculously easy, but the result looks like something you bought at a fancy boutique.
You only need some cotton balls, acrylic paint (blue, purple, black, and white), water, and a jar. Just layer the cotton balls with paint and water, and let the kids swirl it around with a stick. FYI, this gets a little messy, so maybe lay down some newspaper unless you want your kitchen table to look like a tie-dye experiment. 🙂
Why It Works
Kids love the sensory aspect of squishing the cotton balls, and watching the colors blend is genuinely mesmerizing. Plus, you can shake the jar later and pretend the “galaxy” is moving. Hours of entertainment for the price of some cotton balls? I call that a win.
2. DIY Straw Rockets
This is my go-to activity when I need a quick win. You know, the kind of project that doesn’t require a trip to three different craft stores for supplies. All you need is paper, tape, markers, and a straw.
Fold a paper rectangle into a tube, seal one end with tape (make it pointy for authenticity!), add some fins, and slap it onto the straw. When your kid blows into the straw, the rocket launches!
Pro Tip: Have a competition to see whose rocket flies the farthest. I once made a rocket that barely moved, and my five-year-old’s creation hit the ceiling. I’m still bitter about it. :/
3. Edible Moon Phases (Because Food Makes Everything Better)
Look, I’ll be honest. If I can turn a science lesson into a snack, I’m going to do it. Learning about the moon phases is infinitely more interesting when you use Oreos. Just twist them open and scrape the cream filling to represent the different phases—new moon, crescent, quarter, and so on.
A Word of Warning
This activity will generate a lot of requests for “just one more cookie.” I usually let them eat the “mistakes.” Suddenly, we have a lot of “mistakes.” Funny how that works, right?
4. Glow-in-the-Dark Constellations
Forget just sticking stars on the ceiling randomly. That’s so last season. Let’s get a little more structured.
Grab a pack of glow-in-the-dark star stickers and black construction paper. Have your kids pick a real constellation—like Orion or the Big Dipper—and map it out on the paper. You can use white chalk or a silver marker to connect the dots.
Ever wondered why constellations look so different depending on where you are in the world? It’s a cool conversation starter while you’re waiting for the glue to dry. Stick the finished masterpieces on their bedroom wall for a personalized planetarium.
5. Baking Soda Moon Rock Fizz
Warning: This activity looks like a mess, but I promise it’s worth it. It’s basically a space-themed version of a baking soda volcano.
Mix baking soda with a little water and black food coloring to form a paste. Hide some small toys (like little alien figurines or space rocks) inside the mixture and let it dry overnight. Once hardened, arm your kids with a spray bottle filled with vinegar and let them “fizz” their way to the treasure.
The Payoff
The look on their faces when those “moon rocks” start bubbling is priceless. It’s part science experiment, part excavation mission. Just maybe do this outside or in a plastic tub. Unless you enjoy scrubbing baking soda off the floor at 5 PM. No judgment here.
6. Build a Cardboard Rocket Ship
You know that giant Amazon box sitting in the recycling bin? Don’t toss it. That is not cardboard; that is a spaceship waiting to happen.
Give your kids some markers, paint, aluminum foil (for the control panels, obviously), and some old bottle caps for buttons. Let them go to town. They’ll spend hours decorating it, and then they’ll spend weeks climbing inside it, pretending to fly to Mars.
IMO, this is the ultimate activity for fostering imagination. Plus, it keeps them contained in one spot for a while. A contained child is a happy parent.
7. Solar System Sensory Bin
If you have a toddler or a preschooler, you know sensory bins are basically a requirement for survival. Ditch the rice or beans for once and go with a space theme.
Fill a bin with black beans (they look like space rocks!), throw in some plastic space figurines, maybe some silver spoons, and a few pom-poms for “planets.” Let them scoop, pour, and dig to their heart’s content.
Why I Love This: It’s quiet time for me and exploratory play for them. It’s a win-win. Fair warning: black beans will end up everywhere. But hey, a little vacuuming is a small price to pay for twenty minutes of peace.
8. Galaxy Play Dough
Store-bought play dough is fine, but have you ever made galaxy play dough at home? It’s a whole different level. It smells amazing (thanks, cream of tartar), and the texture is unbeatable.
Make a batch of plain play dough and then separate it into balls. Dye each ball with different colors—dark blue, purple, black, and a touch of glitter (because space is sparkly). Instead of mixing them completely, swirl them together lightly so you get that marbled galaxy effect.
The Secret Ingredient
Add some fine glitter to the mix. It gets everywhere, yes, but it also makes the dough look like it has tiny stars in it. Totally worth it.
9. Coffee Filter Planets
This is one of those activities that feels like magic. Give your kid a plain white coffee filter and some washable markers. Have them color all over it with different patterns. Then, take a spray bottle and lightly mist the filter with water.
Watch the colors bleed and blend together, creating a unique planet pattern! Once it dries, you can cut it into a circle and glue it onto black paper.
Personal Anecdote: My son once made a “planet” that looked suspiciously like a melted crayon. He was so proud. I hung it on the fridge anyway. It’s not about perfection, folks. It’s about the process.
10. Star Gazing Bingo
If you want to get the kids outside and away from screens, turn star gazing into a game. Before you head out, make a simple bingo card with things you might see in the night sky. Think “bright star,” “airplane,” “satellite,” “constellation,” or even “bat.”
Grab a blanket, some hot chocolate, and head to the backyard (or a local park if you have too many streetlights). Every time someone spots something on the card, they mark it off.
A Quick Reality Check
With younger kids, this might last about fifteen minutes before someone complains about being cold or needing a snack. But those fifteen minutes? Pure magic. And honestly, that’s all we can ask for sometimes.
So there you have it—ten galaxy activities that have been tested (and sometimes failed) in my own home. The best part about space-themed activities is that they tap into that natural sense of wonder kids have. They look up at the sky and see infinite possibilities.
Give a couple of these a shot this weekend. You might just find yourself having just as much fun as the kids. I know I always do.
Got a go-to space activity that I missed? Drop it in the comments! I’m always looking for new ways to avoid watching the same cartoon for the millionth time. 😉
