Design and build your very own balloon-powered rocket and launch it along our rocket range. Exciting prizes await if you can make it to the end!

Your rocket will be powered by momentum exchange by mass ejection, the same principle that powers big space rockets. But to achieve stable flight, you must first add fins to your rocket. They guide it and keep it on track as it soars through the air.

Try different shapes, configurations, and sizes to see what effect they have!

*WARNING: Activity contains latex balloons