So, you’ve got a little astronaut at home, huh? Or maybe just a kid who thinks the moon is cool (and honestly, when is the moon not cool?). You want to fuel that curiosity about the big, black void above us without just handing them a tablet and hoping for the best. I’ve been there.
After my son asked me why Pluto “got fired” from being a planet for the hundredth time, I realized we needed to go beyond our usual picture books. We needed to get our hands dirty—literally. I went down a rabbit hole of crafting, baking, and experimenting, and I’m here to share the best stuff we found.
Forget those boring textbook diagrams. Here are 15 solar system activities for kids that are actually fun. You know, the kind you might not hate doing on a rainy Sunday afternoon. 🙂
Why Bother with Hands-On Space Fun?
Before we dive into the list, let’s be real for a second. Why go through the mess of paint and papier-mâché? Because when a kid builds something with their own two hands, it sticks. They’re not just learning that Jupiter is big; they’re feeling how much bigger it is than Earth when they’re rolling out balls of dough.
It turns abstract concepts into something they can touch. Plus, it’s a great way to get them off the couch. Win-win.
Get Creative with Classic Crafts
Alright, let’s kick things off with the stuff that usually ends up on the kitchen table (and sometimes the ceiling).
1. The Epic Papier-Mâché Planetarium
This is the granddaddy of solar system crafts, and for good reason. It’s messy, time-consuming, and absolutely glorious when it’s done.
- What you’ll need: Balloons, newspaper, flour/water paste (or glue/water), paint.
- The mission: Blow up balloons of different sizes. The biggest balloon is Jupiter, a medium one is Saturn or Earth, and a tiny one is Mercury. Cover them in the papier-mâché mix. Let them dry for what feels like an eternity (seriously, give it a full 24 hours). Pop the balloons, paint the planets, and then hang them from the ceiling.
Pro-tip from personal experience: Do not try to speed up the drying process with a hairdryer. You will just end up with a sticky mess and a very confused preschooler. Just trust the process. IMO, the final result is worth the wait.
2. Play-Doh Solar System (The Instant Gratification Fix)
Don’t have three days for papier-mâché? No problem. Grab some Play-Doh.
- How we do it: Roll out balls in different sizes. Use red for Mars, blue/green for Earth, and get creative with Jupiter—we like to add swirls of orange and white.
- The learning moment: As you roll, talk about the sizes. Ask your kid: Ever wonder why Jupiter is so much bigger than everyone else? It’s a great way to visually explain the scale (even if it’s not perfectly accurate).
3. Melted Pony Bead Sun Catchers
These are a personal favorite of mine because they look like stained glass, and they’re surprisingly easy.
- What to do: Arrange clear or translucent pony beads in a metal cookie cutter (circle, star, etc.) on a baking sheet lined with parchment paper. Pop them in the oven at 200°F for about 10-15 minutes until they melt.
- The result: You get a solid, flat, sun-catcher planet! Once they cool, you can hang them in the window. The light shining through them is just magical. My daughter calls them her “space gems.”
4. Constellation Geoboards
This one is a brilliant way to combine fine motor skills with stargazing.
- The setup: Give your kid a small square of wood or a sturdy piece of cardboard. Have them hammer in some small nails (or just push in pushpins if you’re using a foam board) in the pattern of their favorite constellation, like the Big Dipper or Orion.
- The fun part: They use rubber bands or string to connect the “stars.” It’s a tactile way to see the shapes in the sky. Warning: Nail-hammering with a 5-year-old requires close supervision and a strong coffee for you. 😉
Science Experiments That Feel Like Magic
Okay, crafts are great, but when you mix in a little science, things get really interesting.
5. The Crater Experiment
The moon is covered in craters, and with this activity, you can find out why.
- Materials: A baking pan, flour, cocoa powder, and a few small rocks or marbles.
- Instructions: Fill the pan with a few inches of flour. Lightly sprinkle cocoa powder on top to represent the darker lunar surface. Let your kids drop the rocks (meteoroids) from different heights into the pan.
- The big reveal: When you carefully lift the rocks out, they leave behind perfect craters! It’s a super simple way to show that impacts in space aren’t just explosions; they’re ejections of material.
6. Building an Erupting Mars
We all love a baking soda volcano. Why not take it to the red planet?
- How to do it: Build a small mountain out of clay or sand on a tray. Mix red food coloring into your baking soda and pile it on top of the mountain.
- Eruption time: Pour in vinegar mixed with a little more red food coloring and watch your “Martian volcano” erupt. It’s a great conversation starter about Olympus Mons, the largest volcano in the solar system, which is on Mars!
7. How Big is the Sun? (A Scaled-Down Demo)
The sun is huge. Like, incomprehensibly huge. Kids (and adults) really struggle to grasp the scale.
- The activity: You need some dry split peas (to represent Earth) and a large exercise or beach ball (to represent the sun).
- The moment: Place the beach ball at one end of the yard. Have your kid hold a single split pea way over on the other side. Then tell them that even that is too close.
- The reaction: Their little faces when they realize the sun is that much bigger than the entire planet is priceless. It’s a “wow” moment you can’t get from a screen.
8. The Magic Pepper Moon
This is a quick one that feels like a magic trick.
- What to do: Fill a bowl with water. Sprinkle black pepper all over the surface (this is your “space”). Place a small, round object (a marble or a balled-up piece of foil) in the center to be your “moon.”
- The trick: Dip a toothpick in dish soap and then touch the water near the edge of the “moon.”
- What happens: The pepper shoots away from the soap, creating a “gravity field” or “atmosphere” around the moon, clearing the area. It’s a super simplified demo of how gravity can clear its orbital path. FYI, this is also why Pluto got “demoted”—it hasn’t cleared its neighborhood!
Edible Space Exploration
Learning on a full stomach is the best kind of learning.
9. The Infamous Oreo Moon Phases
You’ve probably seen this one on Pinterest, and let me tell you, it lives up to the hype.
- The setup: Grab a pack of Oreos and a plastic knife or a toothpick.
- The process: Carefully twist the cookies open to get the cream on one side. Then, scrape the cream into the shape of the different moon phases—a full circle for full moon, a sliver for crescent, half for quarter, etc.
- The best part: Eating the scraps. And the cookies. All of them.
10. Fruit Pizza Planets
This is a slightly healthier take on the edible solar system, perfect for a classroom party or a fun weekend snack.
- The base: Use sugar cookies or large rice cakes as your base.
- The “paint”: Spread a thin layer of yogurt or cream cheese.
- The design: Use different fruits to create the planets. A blueberry and kiwi mix for Earth, strawberries and raspberries for Mars (the red planet), and maybe some mandarin oranges for Venus.
11. Relative Size with Pancakes
Make breakfast educational! This is a lazy Sunday favorite in our house.
- The idea: Make a giant pancake for Jupiter. A medium one for Saturn. Small ones for Earth and Venus. And two tiny little “silver dollar” pancakes for Mercury and Mars.
- Bonus points: Add a ring to your Saturn pancake with a ring of banana slices or a slightly undercooked pancake strip. Serve them up in order from the sun (a small orange on the side of the plate). Delicious and informative.
Moving and Grooving
Sometimes you just need to get the wiggles out.
12. Planetary Distance Race
Textbooks will tell you the planets are far apart. This game will show you.
- What to do: Go to a park or a long sidewalk. Mark one spot as the “Sun.”
- The game: Use a tape measure (or giant steps) to measure out the distance to each planet based on a simple scale (e.g., 10 feet = 1 astronomical unit). Have your kid run, hop, or skip from the Sun to Mercury, then to Venus, then to Earth.
- The takeaway: By the time they get to Jupiter, they’ll be exhausted and will truly understand just how empty and vast space really is. It’s a workout and a lesson in one.
13. The Orbiting Game
Gravity is a tough concept. This game makes it a little more physical.
- How to play: You be the “Sun” and stand in one spot. Your kid is the “Earth.” They have to run in a big circle around you, but they have to keep facing you the whole time (this represents the Earth rotating as it orbits).
- The twist: As they run, they also have to spin slowly (representing a day). Try doing it without getting dizzy! You can then switch roles. It’s hilarious to watch and they’ll never forget the difference between rotation and revolution.
Tech-Free Quiet Play
Need a few minutes to breathe? These are your new best friends.
14. Solar System Sensory Bin
Sensory bins are great for independent play. I throw one together whenever I need to make a phone call without being interrupted.
- The base: Black beans or dyed rice work perfectly for the “space” background.
- The filler: Throw in some small toy planets (you can buy cheap sets online), some space-themed erasers, glow-in-the-dark stars, and maybe a little toy rocket ship.
- The result: They will dig and play and sort for a surprisingly long time. It’s quiet, contained (mostly), and educational.
15. DIY Planet Order Flashcards
This is less of an activity and more of a sneaky learning tool.
- What to do: Take some index cards. On one side, help your kid draw a picture of the planet. On the other side, write its name and one fun fact (e.g., “Venus: The hottest planet! And it spins backwards.”).
- Why it works: The act of making them helps with memorization. Plus, you can use them later for quizzes, matching games, or just to have the kids put them in order on the living room floor. It’s low-prep and high-reward.
Wrapping Up Our Cosmic Journey
So there you have it. Fifteen ways to turn your home into a mini mission control without spending a fortune on fancy kits. From the messy glory of papier-mâché to the simple joy of an Oreo moon, there’s something here for every kind of kid.
The most important thing? Have fun with it. Don’t stress about getting the colors exactly right or the distances perfectly scaled. The goal is just to look up and wonder together. Now, go forth and explore! And maybe keep some wet wipes handy for that flour-based moon. 😉
Got a favorite space activity that I missed? Drop it in the comments—I’m always looking for our next mission!
