Europa, Jupiter’s icy moon, will block the star for skywatchers

Later this month, skywatchers in Africa can watch a star disappear from view thanks to a quirk of celestial arrangements.

The mission of the European Space Agency (ESA) Gaia, which was launched in 2013, has been a powerhouse of observational astronomy, having a huge impact on the way scientists study the sky. Of map the galaxy in stunning detail for find a star cluster which was hidden by glare in other telescopes, the spacecraft’s ultra-sensitive instruments proved invaluable in studying the Milky Way.

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