Ganymede

A clear sky.
Warm temps.

Moonless night.
Jupiter bright.

Four moons.
Rare treat.

Orbs dancing.
Gravity's string.

Io then Europa.
Callista then Ganymede

Slung straight
On a line right

40 years of night skies.
Awed anew.

http://www.skyandtelescope.com/observing/objects/javascript/jupiter#

~jfc~