Transit of Venus

David Cortner

You don’t want to miss this, because it won’t happen again for more than 100 years.

Tuesday afternoon, starting just after 5 p.m., a rare astronomical event will be visible in the skies over St. Louis. It’s known as the transit of Venus. 

St. Louis Public Radio's Véronique LaCapra asked University of Missouri-St. Louis astrophysicist Erika Gibb to help explain this twice-in-a-lifetime phenomenon.