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== Relationship with Jupiter's rings == [[Image:PIA01627 Ringe.jpg|thumb|Schematic of Jupiter's ring system and four inner moons. Amalthea is the third outermost moon inner, orbiting within the gossamer rings.]] Due to [[tidal force]] from Jupiter and Amalthea's low density and irregular shape, the [[escape velocity]] at its surface points closest to and furthest from [[Jupiter]] is no more than 1 m/s, and dust can easily escape from it after, for example, micrometeorite impacts; this dust forms the [[Rings of Jupiter#Amalthea gossamer ring|Amalthea Gossamer Ring]].{{sfn|Burns Simonelli et al.|2004}} {{anchor|moonlets}}During its flyby of Amalthea, the ''Galileo'' orbiter's [[Galileo (spacecraft)#Star scanner|star scanner]] detected nine flashes that appeared to be small [[moonlet]]s near the orbit of Amalthea. Because they were sighted only from one location, their true distances could not be measured. These moonlets may be anywhere in size from gravel to stadium-sized. Their origins are unknown, but they may be gravitationally captured into the current orbit or they may be ejecta from [[impact event|meteor impact]]s on Amalthea. On the next and final orbit (just an hour before destruction), ''Galileo'' detected one more such moonlet. However, this time Amalthea was on the other side of the planet, so it is probable that the particles form a [[planetary ring|ring]] around the planet near Amalthea's orbit.<ref name=Fieseler_2004/><ref name=JPL_2003/><ref name=IAU_2003/><ref name=Lakdawalla_2013/>
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