Cool action in the children's room: in this Kosmos experiment set, children create fascinating bubbling effects in a rocket base Simply follow the instructions, fill the coloured water, oil and effervescent tablet in the right mixture into the rocket station and off you go. Wild bubble bubbles rise up and down - but why? The secret is in physics, which explains the instructions to curious researchers children clearly and age-appropriate. The LED lamp creates great colour effects that even glow in the dark. The rocket quickly turns into a small lava lamp. The Kosmos Space Bubbles experiment box - the perfect gift for children aged 8 and over.