It was a once, or twice in a lifetime event, as Venus made its move across the sky, passing directly in front of the sun.
A few dozen people gathered on the Colorado National Monument to watch the transit of Venus. The monument was one of the best spots to see the spectacle, which won't come around for another 105 years.
Members of the Western Colorado Astronomy Club were at the monument with a collection of powerful telescopes, helping sky gazers watch the perfectly round black dot slowly work its way across the sun.
"The spot that goes across the sun is probably the size of maybe an eraser in a big scope, and maybe a pencil in the small scope, so it takes about 4 to 5 maybe 6 hours to transit," club member Rick Skelly said.
The last transit of Venus was 8 years ago. It won't be back until the year 2117.