Jupiter's icy moon Europa will block out a star for lucky skywatchers

 mapping the galaxy in astonishing detail to finding a star cluster that was hidden by glare in other telescopes,

 the spacecraft's ultra-sensitive instruments have proved themselves invaluable in the study of the Milky Way.

an occultation of a faraway star by an extraterrestrial satellite would go unnoticed by almost everyone

the pitch-black disk of Europa will eclipse the star like the new moon passing in front of the sun

ESA plans to launch the Jupiter Icy moons Explorer, or JUICE mission, next year,

JUICE will reveal one of the solar system's most compelling worlds in astonishing detail.

"It will help spacecraft operators navigate between these icy worlds more accurately, 

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