Friday night's full moon will appear larger and brighter than any full moon this year.
That's because it will be closer to us.
The moon's orbit is elliptical, with one side 50,000 kilometers closer to Earth's surface than the other.
On Friday, the moon will become full just four hours after it reaches its closest point, called the perigee.
It will appear to be 14 percent larger and 30 percent brighter than run-of-the-mill full moons.
Check it out through what is forecast to be a partly cloudy sky. Moonrise is at 5:13 p.m.
To read more, go to http://science.nasa.gov/headlines/y2008/09dec_fullmoon.htm