May 27, 2012 1:08 PM by Matt Stafford
BOULDER, Colo. (AP) - Don't throw those disposable eclipse-watching glasses away - they can be used in the coming weeks to gaze at the sun again, this time to witness a far rarer celestial event.
Venus will journey across the surface of the sun June 5, blocking a tiny circle of light as it goes.
The so-called transit of Venus occurs in patterns of eight years followed by 121.5 years, followed by eight years again, and then 105.5 years. Venus crossed the sun eight years ago, so the next transit won't occur until Dec. 11, 2117.
Douglas Duncan, director of the University of Colorado's Fiske Planetarium, tells the Daily Camera that eclipse-watching glasses can be used to view June's transit, which will start around 4 p.m. and last through sunset in Colorado.