Space Party Ideas: The Complete UK Guide

Space parties hit a particular sweet spot for children aged 5–10 — the theme is cool, the visual language is strong (rockets, planets, stars, astronauts) and there's enough real science to satisfy curious children without it feeling like school. This guide covers everything you need for a space party in the UK: decorations, food, games, party bags and costumes.

Space Party Decorations

Colour palette

Deep space: midnight blue, black, silver, gold and flashes of electric blue, purple and lime. Add glowing yellow stars and you have the complete look. A dark room with fairy lights immediately sets the mood — space is one of the few party themes where a darker atmosphere actually works in your favour.

Key decoration elements

• Balloons — chrome silver, black, deep blue and purple biodegradable latex balloons for a galaxy atmosphere. Star-shaped foil balloons if available. Hanging black balloons from the ceiling at different heights creates a floating planets effect.
• Stars everywhere — gold and silver star stickers on walls, windows and tablecloths. Glow-in-the-dark stars on the ceiling if you have them.
• Planet mobiles — cut circles in different sizes from card, paint or colour them as planets, and hang at different heights from the ceiling.
• Rocket ship entrance — a large rocket cut from card or painted cardboard boxes at the entrance. Children "launch" into the party space.
• Mission control table — label the food table "Mission Control" and use aluminium foil as a tablecloth for a metallic space station look

Atmosphere hack

Turn off overhead lights and use fairy lights, glow-in-the-dark items and battery-operated tea lights. Space feels most convincing in the dark, and children find it genuinely exciting.

Space Party Food Ideas

Savoury food

• Astronaut sandwiches — cut into star or rocket shapes with cookie cutters
• Planet dip platter — round foods arranged as planets: cherry tomatoes, blueberries, orange segments, cucumber rounds, each labelled with a planet name
• Moon rock popcorn — popcorn in silver foil bowls
• Meteor meatballs — served in a black bowl
• Galaxy breadsticks — plain breadsticks with black sesame seeds

Sweet table

• Galaxy cake — dark chocolate sponge with navy/purple/pink ombre frosting, edible silver stars and a fondant rocket
• Planet cupcakes — frosted in different colours, each labelled with a planet name
• Star biscuits — shortbread cut with star cutters, decorated with silver edible glitter
• Galaxy bark — dark chocolate base with swirls of blue and purple, edible glitter and gold star sprinkles
• Alien smoothies — green smoothies (spinach, banana, apple) in clear cups with a googly eye stuck on

Drinks

"Rocket fuel" — blue raspberry lemonade or any blue/purple drink. Glow-in-the-dark cups (available from party shops) work brilliantly for this theme.

Space Party Games and Activities

Astronaut training

Set up an "astronaut training circuit" with 4–5 stations: balance beam (walk a taped line with "zero gravity"), shuttle jump (jumping in a sack or jumping over hurdles), asteroid dodge (dodge thrown soft balls), moon landing (land softly from a jump), mission debrief (answer a space question). Award each child an "Astronaut Certification" at the end.

Build a rocket

Provide cardboard tubes, card, tape and pens. Challenge children to build and decorate a rocket in 15 minutes. Award prizes for "most likely to reach Mars," "most aerodynamic," "best decorated." Clockwork Soldier and similar brands have model rocket kits that work brilliantly as a structured version.

Galaxy slime making

Make simple PVA glue slime with black, blue and purple food colouring and silver glitter. Children take their slime home in a small pot. Messy but very popular.

Planet hunt

Hide small coloured balls or ball pit balls around the space labelled as planets. Children collect all eight (or nine, depending on your position on Pluto) and arrange them in order from the sun. Educational and competitive.

Space quiz

For 7+ year olds, a space facts quiz is surprisingly popular. Prizes for the astronaut who knows the most. Questions: "How many planets in our solar system?", "Which planet is smallest?", "What is the name of our galaxy?", "What is the nearest star to Earth?"

Space Party Bag Ideas

Browse the full space party collection for tableware, decorations and party bag ideas. Space party bags should feel like a mission kit — functional, purposeful and cool. Avoid generic space-themed plastic toys in favour of items that have lasting value.

What to put in space party bags

• Space/science discovery kit — the Moulin Roty Space Discovery Box is a beautiful, genuinely educational item that works perfectly as a standalone party bag gift
• Space notebook — for recording space observations, drawing planets, writing mission logs
• Glow-in-the-dark stars — to stick on their bedroom ceiling. Every child's dream.
• Star projector keyring — small light-up items that project a star pattern
• Astronaut pen — a metallic silver pen for their space notebook
• Alien putty — glow-in-the-dark or galaxy-coloured fidget putty

Space Party Costumes

• Astronaut — white or silver clothing, painted cardboard box helmet (make one as a party activity). NASA-style badge on the chest.
• Alien — green or silver clothing, antennae headband, face paint
• Planet — round blue/green clothing with continent shapes, or coloured to represent a specific planet
• Star — yellow or gold outfit with a star wand
• Mission commander — navy clothing with badges and a clipboard. Great for children who refuse costume parties.

Space Party Planning: Age Guide

• 3–5 years: Rockets, stars, aliens and the dark atmosphere. Simple games. Focus on the visual excitement.
• 6–9 years: Full theme engagement — astronaut training, planet quizzes, build-a-rocket. This age group often has strong existing space knowledge.
• 10+ years: Lean into real science. A more sophisticated quiz, a model rocket kit activity, discussion of actual space missions. This age appreciates accuracy.