A “first trip around the sun” birthday party is a fun theme that can work for boys, girls, or with a gender-neutral color scheme.
These first birthday party ideas with an outer space theme will get you started planning your baby’s first birthday party, and will make it a memorable event for all of your guests.

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Invitations and paper.

Start your outer space theme when you send the invitations out. There are a few places online where you can find custom invitations, some digital and some printed for you, and two of the largest sources are Etsy and Zazzle.
First Trip birthday invitations on Etsy.
Whether they’re physical invites or digital ones, you’ll be able to find a design that you like on Etsy. These are generally customizable, or you can get a digital file to personalize yourself before printing or sending them as an evite.
Click to see space theme invitations on Etsy.
First Trip Around The Sun birthday invitations on Zazzle.
Zazzle has a lot of designs that you can either customize yourself and have printed, or buy as a digital download. Whether things are available as a download will depend on how the artist has set it up, but you can definitely get most things printed for you and shipped to you by Zazzle.
Click to see outer space theme invitations on Zazzle.
To see the full directory of all of our verified members, click here.
Party decor ideas.
First Trip Around The Sun first birthdays have so many fun decor options that could work, there are too many to list. But here are a few to get you started, and you can let your creativity expand on these suggestions.
Entryway decorations.

Set up signs and banners announcing the party, or get yard signs to put out so that guests know where to go. Make a cardboard rocket ship frame that you can put over the door so that people are walking through it when they come into the party.
Photo area.
Set up a space-themed backdrop with planets, stars, and a giant sun for photos. Use balloons for planets and the sun, arranged like a mini solar system.
Room decor.
Hang glow-in-the-dark stars or planet cutouts from the ceiling. (Get them on Amazon #ad) You can also make these by cutting out glitter scrapbook paper in star and planets shapes.
Hang a “First Trip Around the Sun” banner featuring monthly photos of the baby’s first year.
Use LED twinkle lights (see them on Amazon#ad) to create a “starry sky” effect in the room.
Tableware and accessories.
Use space-themed plates, napkins, and cups with planets, rockets, and astronauts.
Decorate the high chair with mini planets, stars, and a sun.
Party games and activities.
You’ll want to provide games and activities at your party, but activities can be more popular for your guests because they’re less structured. They keep people busy, and if you set up stations where people can mingle and rotate around the room during the party, it gives people things to do at their own pace.
These are some ideas for some games and activities that you can set up for your guests.
Activities for kids.
Set up an obstacle course where kids can crawl through tunnels, jump over “asteroids,” and “launch” into space.
Hide small silver-wrapped “moon rocks” around the party area for kids to find in a moon rock hunt.
Provide paper bowls, stickers, and markers so guests can create their own astronaut helmets at a crafting station.
Activities for kids and adults.
Play a game of astronomy bingo where parents can play themselves or help their younger kids. Get the cards at Greengate Images.
Get a piñata shaped like a rocket, sun, or planet filled with treats like pop rocks and mini milky ways candies. Find outer space pinatas on Amazon #ad
Use a stand with rings representing different planets and let guests try to toss rings onto them
Set up a personalized cornhole game for guests to play with. Get your set that you can use for this party and in the future here.
Set up a book station where kids can read books about space, astronauts, and planets for a quieter activity.
Party food ideas.
You can do the traditional birthday cake and other treats for this theme, but you should also have savory choices to offset the sweets.
Sweet foods.

Have an outer space cake that’s decorated with wafer paper or fondant decorations. Click here to see some examples on my baking website, or click here to read an article about making one yourself.
Serve cake pops decorated like different planets with colorful icing.
Serve freeze-dried astronaut ice cream as a fun space snack.
Make a colorful fruit punch served in clear cups with “rocket fuel” labels.
Cupcake options.
Get these printable outer space cupcake wrappers for an easy decoration that will make store-bought generic cupcakes into a themed dessert.
Swirl blue and purple frosting on cupcakes and sprinkle them with white nonpareils.
Get customized cupcake toppers with the birthday kid’s name on them. These come in both pink and blue options
and you can get them in the Artisan Shopper Zazzle shop.
Savory foods.
Make sandwiches cut into rocket shapes using a cookie cutter.
Do charcuterie boards with round crackers and cheese cut into circles and stars with cookie cutters.
Set up a coffee station labelled “rocket fuel” for adults who need some caffeine!

Click here for a list of over 45 first birthday party theme ideas.
Party favors.
Candy with the party theme customized on them.
Get some small toy rocket ships for kids to take home.
Give guests glow in the dark stick-on stars for kids to decorate their rooms. (Get them on Amazon #ad)
Sheets of space stickers featuring planets, astronauts, and spaceships. (see them here on Etsy)
Give guests small containers of dark blue and purple galaxy slime. See some here on Amazon #ad
Send guests home with small books about space exploration for young guests.
Pop rocks or rock candy labeled as “moon rocks.”
Space-themed temporary tattoos of astronauts, planets, and spaceships.