Juice spacecraft's maiden scientific mission to space.

ESA's Jupiter Icy Moons Explorer (Juice) has recorded magnetic field data as its 10.6 m-long magnetometer boom deployed. The Juice magnetometer boom (J-MAG) was deployed on 21 April, when Juice was about 1.7 million km from Earth. Once in the Jupiter system in 2031, J-MAG will help characterise the planet’s magnetic field and its interaction with that of giant moon Ganymede, and will study the subsurface oceans of the icy moons. J-MAG is one of ten instruments that will examine Jupiter and its largest ocean-bearing moons Ganymede, Europa and Callisto.