The change is subtle and happens over many nights.
Never-before-seen temperature and ion density measurements reveal that the effect of Jupiter's moons on its aurora are more complicated than scientists thought.
A waxing gibbous moon and brilliant Jupiter will pair up after sunset on Feb. 26.
Ganymede's auroras splinter into small, bright patches — structures that mirror features seen in Earth's own auroral displays ...
While Jupiter's main aurora has a great deal of hot materials, a snapshot showed a cold spot in Io's auroral footprint.