Jupiter has four large moons – Io, Europa, Ganymede and Callisto – with diameters of more than 3000 kilometres. However, as of April 2023, we know it is also home to 91 additional small satellites.

JUPITER'S satellite Io has remarkable control of Jovian decametric radio emission (recently reviewed 1,2) and also a very high and possibly varying albedo 3,4.