Mercury Transit 2019: The Astronomical History of This Rare Celestial Event

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On Monday, Nov. 11, 20199, Mercury will appear to pass across the disk of the sun as seen from Earth. This event — which astronomers call a transit — helped early astronomers measure distances in the solar system.

Mercury Transit 2019: The Astronomical History of This Rare Celestial Event : Read more

 

[rod]

I enjoyed this report and history in astronomy of observing Venus and Mercury transits. The graph showing time from ingress and egress is from left to right. Viewing in a refractor model telescope, the image will be upright but mirror reversed. Right to left Tomorrow for me looks party sunny, forecast was better a day or so ago but perhaps I may see some of the celestial event using my refractor telescope.