088211

Simultaneous observations with XMM-Newton and Juno over the last 3 years have revolutionised our understanding of the coupling between Jupiter.s magnetosphere and ionosphere leading to new theories of how planets can produce X-rays. For example comma evidence is building from joint XMM-Newton and Juno observations that ion cyclotron waves are one of the drivers for the gas giant.s X-ray aurorae. However comma we only have one more opportunity to utilise the unique capabilities of XMM-Newton and Juno before the jovian explorer is due to finish its mission in July 2021. Juno is now in the dusk sector of Jupiter.s magnetosphere - a region that no other spacecraft will visit again for at least another decade.