ST. LOUIS (KMOV) —Venus will pass directly between the Earth and the sun in a rare space event viewable from Earth on Tuesday.
When this happens, we see Venus as a small dot moving slowly across the face of the sun. The entire transit lasts over six hours and will not be seen again until December 2117.
In North America, people can observe Venus beginning around 5:04 p.m. Central until sunset.
According to transitofvenus.org, this rare alignment is how we historically measured the size of our solar system.
Be cautious, however, because you should never look at the sun without proper solar filters. Sunglasses are not effective protection. For a list of viewing methods, visit transitofvenus.org.
Locally, multiple St. Louis-area organizations area holding Venus watch parties for the event.
The University of Missouri in St. Louis is hosting a viewing at the Richard D. Schwartz Observatory at Florissant Road and Rosedale Drive. For more information on how you can participate, click here.
The St. Louis Astronomical Society is also hosting an event at the World’s Fair Pavilion. For information on how you can participate, click here.
In St. Charles County, the Astronomical Society of Eastern Missouri is also having a Transit of Venus event. Click here for more information.