October

Don’t miss the rare double transit of Ganymede’s and Callisto’s shadows on Jupiter

4 OCTOBER A rare double transit of Ganymede’s and Callisto’s shadows on Jupiter 5 OCTOBER Good opportunity to spot the thin waning crescent Moon 8-9 OCTOBER Favourable peak of the Draconid meteor shower 25 OCTOBER Mercury reaches a favourable western elongation 29 OCTOBER Venus reaches its greatest eastern elongation October at a glance Long, dark October nights are great for stargazing, and Jupiter offers up some amazing satellite transit events this month. On 4 October there’s a rare opportunity to see a double transit of Ganymede and Callisto’s shadows. The event starts in daylight at 18:00 BST as Callisto’s shadow begins to transit. Ganymede will also be in transit at this time, leaving Jupiter’s disc at 19:19. Ganymede’s shadow joins Callisto’s at 19:55. The event ends at 22:25 as Callisto’s…

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The Astronomer's Yearbook (Digital) - 1 Issue, Astronomer's Yearbook 2021

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