A shadow over the Hunter's Moon on the night of October 18 to 19
Friday, October 18, 2013, 1:37 PM -
Friday night's Hunter's Moon will have a dark shadow across its face - a phenomenon called a penumbral lunar eclipse.
It's a rare - though not very impressive - type of eclipse where the earth more or less lines up between the sun and moon, and the moon brushes the outer edges of the earth's shadow, without entering it completely.
Rather than appearing as though a section of the moon is completely black, the affected area will look more like a faint shading, visible to photographers and those with keen eyes.
Here's what the phenomenon looked like in 1999:
The best vantage point to view the eclipse is from Africa, Europe and the Middle East, but the effect should be partially visible in eastern North America.
The shadow will begin to appear at 5:53 p.m. Eastern Time, peaking at around 7:50 p.m. and and ending after 9:48 p.m.
All this in time for the annual Hunter's Moon - the first full moon after the autumn equinox on Sept. 22 - so no matter what, people with clear skies in the forecast are guaranteed of a bright night sky.
If you prefer your skies filled with active weather, check out our video gallery.