Merki is back - and this time, he's heading to the biggest planet in the Solar System: Jupiter!

Curious as ever, Merki blasts off on a mission full of wonders.
Why does Jupiter have stripes? What is the Great Red Spot? And what secrets might be hiding beneath Europa's icy surface?

In this magical space adventure written for ages 4-8, science meets imagination as young readers follow Merki through giant storms, glowing lights, and strange, floating moons.

With simple language and playful curiosity, Merki helps kids explore big ideas in a fun, friendly way.

Ready for liftoff? Open Merki's space diary and join the journey!