Cassini Pays a Last Visit to an Icy Moon of Saturn

Last week, the nothing-short-of-phenomenal Cassini spacecraft made its last close pass of Saturn’s icy moon Dione. Yes, last. After more than a decade orbiting Saturn, the Cassini mission’s days are numbered. It will end late in 2017, after deservedly being extended twice (and having toured the Saturnian neighborhood since 2004). So, in many...
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