Mercury at Inferior Conjunction

orbital-positions   Thursday 19 June at 23 UT (6 pm CDT) the innermost planet Mercury reaches inferior conjunction. As the banner graphic at the top of the page shows, inferior conjunction of Mercury places Mercury between the Earth and the Sun – much like the position of the Moon at new phase. The graphic to the right shows the relative to the Earth and Sun position names for both inner planets and outer planets.

   The short video below, taken by the Mars Curiosity Rover, shows a transit of the Sun by Mercury as seen from the surface of Mars.

   
   
   
Caution: Objects viewed with an optical aid are further than they appear.
   Click here to go to the Qué tal in the Current Skies web site for more observing information for this month.

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