International Space Day (1st Friday in May)
International Space Day, on the first Friday in May, is one of those weird holidays in May that’s actually really easy to use.
You don’t need to understand rocket science or plan anything complicated. It’s more about leaning into that natural curiosity kids already have, why the moon changes shape, what astronauts eat, or whether we’d survive on Mars.
Most years, I keep this one simple. A quick activity, something hands-on, and usually a coloring page or two. It’s one of those days that works best when you don’t overthink it.
When is the Holiday?
It’s observed annually on the first Friday in May. Upcoming dates are:
- May 1, 2026
- May 7, 2027
- May 5, 2028
- May 4, 2029
- May 3, 2030
Who Invented It?
International Space Day started in the U.S. as a way to get more students interested in science and space.
Over time, it’s just been picked up more widely, especially by schools and STEM programs.
The History of the Holiday
The holiday has its roots in the early days of space exploration, especially the Cold War–era space race between the U.S. and USSR.
With milestones like the launch of Sputnik and the Moon landing, public interest in space grew rapidly.
The formation of the International Space Station later showed the potential for peaceful global collaboration in space, which remains a core theme of this holiday.
Fun Facts About Space Day
These are the kind of facts that usually get kids asking more questions (which is kind of the whole point of the day):
- Astronauts have actually made music in space. Someone really did bring a flute to the ISS and played it in orbit.
- You can send your name to space on real missions. NASA still does this, and kids love the idea of “being part” of a launch.
- The Moon reportedly smells like burnt gunpowder. Not something you’d expect, but several astronauts have said the same thing.
- Space isn’t just government-run anymore. Companies like SpaceX and Blue Origin are now part of the race.
- The International Space Station is visible from Earth. You can actually spot it without a telescope if you time it right.
Coloring Page
If you want something simple to start the day, this space coloring page works well as an easy entry point.
It gives kids something familiar to sit down with first, and it naturally leads into bigger conversations about planets, astronauts, or what they think space might actually look like.
Activities to Celebrate
This is one of those days where simple works better than over-planned.
Building a cardboard rocket is always a good starting point. It doesn’t need to look perfect, paper towel rolls, foil, and markers are usually enough. What matters is that they start thinking about how rockets actually work while they’re making it.
If you want something quieter, space-themed puppets are an easy win. Once they’re cut out and stuck onto popsicle sticks, kids tend to take over from there and turn it into their own little space story.
For younger kids, a sensory bin with black rice, small toys, and a few “hidden” planets keeps them busy longer than you’d expect. It’s one of those activities that looks simple but holds their attention.
If you’ve got slightly older kids, galaxy slime or a small “experiment-style” activity works better. Mixing colors, adding glitter, and seeing how it changes keeps it interesting without needing a full science setup.
And if the weather’s decent, just go outside. A blanket, a stargazing app, and five minutes of looking up is usually enough to make the whole thing feel a bit more real. If you time it right, you might even spot the ISS passing overhead. Honestly, the stargazing tends to be the part kids remember most.
Related Recipes for the Holiday
If you want to stretch this into something a bit more fun, adding a themed snack or two works surprisingly well.
- Galaxy Ice Cream – This colorful dessert is packed with star-shaped sprinkles and shades of purple and blue. You can find the recipe on Keep Calm and Eat Ice Cream, and it’s a no-churn option, easy and fun.
- Solar System Cupcakes – Chocolate cupcakes topped with vanilla almond frosting dyed space-blue, each decorated as a different planet. A fun way to “orbit” through dessert.
- Galaxy Sushi Bowl – A vegan dish with black rice, vibrant veggies, and purple pickled onions. It’s not just cool to look at, it’s tasty too. Great for a themed dinner.
- Color-Changing Galaxy Lemonade – Using butterfly pea flower tea, this lemonade changes color with acidity. Kids love the wow factor!
- Fruit & Marshmallow Rocket Snack – Stack strawberries, banana slices, and marshmallows on a skewer to resemble a rocket. Easy, healthy(ish), and fun for little hands.
Links to Resources
If you want something quick and ready to go, these are the ones I keep coming back to. They’re easy to set up and actually hold kids’ attention:
- If I Were an Astronaut – A fun and simple writing prompt that gets kids thinking creatively about life in space.
- Free Printable Solar System Bingo – A great game for kids to learn about planets while having fun.
- Outer Space Word Search for Kids – A fun, galaxy-themed word puzzle to reinforce space vocabulary. You can print and play anytime.
- Astronaut Puppet Printable – Perfect for preschoolers interested in space, easy to cut, color, and assemble.
- Popsicle Stick Space Puppets + Printable – Includes rockets, aliens, and planets. Great for imaginative storytelling and dramatic play.
- Watercolor Galaxy Bookmarks – A relaxing art activity that doubles as a keepsake.
All are free and can be used at home or in the classroom.
Related Holidays
If you’re a fan of space-themed celebrations, there are a few more dates to keep on your radar.
Pluto Demoted Day on August 24th marks the day Pluto lost its planet status, sparking debates and curiosity about our solar system.
Space Exploration Day, celebrated on July 20th, honors the anniversary of the Apollo 11 Moon landing and is a great time to revisit humanity’s biggest leap.
And for those who love a little mystery with their astronomy, World UFO Day is observed on both June 24th and July 2nd to raise awareness of unidentified flying objects and explore the possibilities beyond Earth.
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