Jupiter’s icy moon Europa blocks a star for lucky skywatchers

Later this month, skywatchers in Africa may see a star blink out of sight thanks to a quirk of celestial arrangements.

The mission of the European Space Agency (ESA) GaiaLaunched in 2013, it has been a powerhouse of observational astronomy and has had a major impact on the way scientists study the sky. From mapping the galaxy in amazing detail to find a star cluster hidden by glare in other telescopes, the spacecraft’s ultra-sensitive instruments have proved invaluable in studying the Milky Way

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