Short Jovian Poems

Four moons orbiting Jupiter were discovered by Galileo.
He named them Europa, Ganymede, Callisto, and Io.
Several unmanned space probes were sent there recently.
They revealed things no earth-bound sky watcher could see.
Of special interest was the Jovian moon Io.
This body has many an active volcano.
Io is literally turning itself inside-out.
This makes the moon the most fascinating without a doubt.
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