Watch the Full Moon as it rises this Friday night, February 10. It may look like the “Man in the Moon” has had enough of the sunshine and is getting some shade.
This is not a full, total lunar eclipse or even a partial eclipse. This is what astronomers call a “penumbral eclipse.”
The Moon will be skimming the shadow of the Earth just enough to shade part of the lunar face, making it noticeably duller at its maximum extent. The top of the Moon will be darkest.
What is a penumbra? Every solid, opaque object casts a shadow; in fact it casts TWO shadows, one enveloping the other.
To prove it, just hold your finger under the nearest light bulb and examine the shadow it casts on a piece of white paper. 
You will notice the dark shadow of your finger is surrounded by a much lighter shadow. Your finger’s shadow appears blurred on the edges, rather than sharp. The dark part of the shadow is the “umbra” and the lighter part is the “penumbra.”
The only time this won’t happen is if the light source is a point. If the light source is larger in apparent width than a mere point, such as in the case of a lightbulb nearby or the Sun, the light rays going around the object leave two shadows. 
A penumbral eclipse of the Moon only occurs when at full phase, when it is directly opposite the Sun as seen from the Earth- just like other lunar eclipses. 
It is impossible to detect the very start or finish of a penumbral eclipse because the Moon is so bright and the penumbral shadow increases in its depth from the outside edge, in.
The greatest extent of the eclipse, when the Moon will be most darkened, occurs at 7:44 p.m. EST. Those in the Central Time Zone may view the maximum at 6:44 CST, but for them, the moon is lower in the sky.
The eclipse begins at 5:34 p.m. EST and ends at 9:53 p.m. EST. See how long you can detect the dim penumbra as the Moon travels out of the shadow.
While you will be able to notice the eclipse around its maximum extent with eyes alone, binoculars will greatly enhance your view.
Meanwhile, be sure to look in the southwest after darkness sets in for the very brilliant planet Venus. Look to the upper left of Venus for the planet Mars, which is much dimmer and reddish. If you stay up long enough, watch for planet Jupiter — very bright — rise in the southeast around 11 p.m. Jupiter is will up in the south before dawn. Planet Saturn may be seen low in the southeast during morning twilight. Saturn is also fairly bright.
Keep looking up!
—Peter Becker is Managing Editor at The News Eagle in Hawley, Pennsylvania. Notes are welcome at news@neagle.com. Please mention in what newspaper or web site you read this column.