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1. en.wikipedia.org › wiki › MoonMoon - Wikipedia

   en.wikipedia.org › wiki › Moon

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   Vor 19 Stunden · Because the Moon continuously blocks the view of a half-degree-wide circular area of the sky, the related phenomenon of occultation occurs when a bright star or planet passes behind the Moon and is occulted: hidden from view. In this way, a solar eclipse is an occultation of the Sun. Because the Moon is comparatively close to Earth, occultations of individual stars are not visible everywhere ...

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3. en.wikipedia.org › wiki › Influenza_A_virus_subtype_H5N1Influenza A virus subtype H5N1 - Wikipedia

   en.wikipedia.org › wiki › Influenza_A_virus_subtype_H5N1

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   Vor 19 Stunden · e. Influenza A virus subtype H5N1 ( A/H5N1) is a subtype of the influenza A virus, which causes influenza (flu), predominantly in birds. It is enzootic (maintained in the population) in many bird populations, and also panzootic (affecting animals of many species over a wide area). [1] A/H5N1 virus can also infect mammals (including humans) that ...