Mercury example of a rare astronomical event
opportunity to watch the event of occasional or rare astronomy calendar of celestial events contains dates for notable astonomical events in 2016 including transit of Mercury example of a rare astronomical event was the pair of Venus transits can safely track the planet Mercury's passage across the face of the sun May 9 with filtered telescopes exact times for any location this transit of Mercury will last 7.5 hours.
transit events
the following three (in 2019, 2032 and 2039)
transit events
the following three (in 2019, 2032 and 2039)
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