During the morning hours of Monday, November 11, an unusual celestial event may be observed from Evansville when the planet Mercury will be seen to cross the face of the Sun. The passage of a planet across the disk of the Sun—which is called a transit—is a fairly rare occurrence. Only transits of Mercury and Venus may be seen from the Earth. The last transit of Mercury occurred in 2016, but in any given century only about a dozen transits of Mercury occur.
This event may only be viewed using special telescopes that block the intense glare of the Sun. As is the case of a partial solar eclipse, persons may not casually view the Sun without proper protection. When viewed through a telescope equipped with a solar filter, the planet Mercury appears as a tiny, black disk slowly crossing the face of the Sun over a period of 5 hours.
The Evansville Museum and the Evansville Astronomical Society will co-host a viewing event on the date of the transit at the 200 block of Dreier Avenue on Reitz Hill from 6:30 AM until Noon. Telescopes allowing for the safe viewing of the event will be available at this location for those who wish to experience the transit. The event will be canceled in the event of heavy cloud cover or inclement weather.