Five mysteries Juice will address

Jupiter, its magnetic environment, and its moons form one of the most intriguing parts of the Solar System. ESA’s Jupiter Icy Moons Explorer (Juice) will reveal more about this fascinating planet and its natural satellites.

The mission will investigate five areas of priority, from Jupiter’s turbulent atmosphere to the suspected liquid oceans on three of its planet-sized moons: Ganymede, Europa and Callisto:

• What are ocean worlds like?
• Why is Ganymede so unique?
• Could there be – or ever have been – life in the Jupiter system?
• How has Jupiter’s complex environment shaped its moons, and vice versa?
• What is a typical gas giant planet like – how did it form, and how does it work?

Find out more about the five main mysteries Juice will solve in our dedicated article.