"Astronomers are encouraging people to take a moment to observe the moon on Saturday night, when it will appear bigger and brighter than normal in what's known as a "super moon." 
The moon will appear roughly 14 percent larger and 30 percent more luminous than most full moons because it will be about 50,000 miles closer than its farthest point in its elliptical orbit, according to NASA.

The moon will reach perigee, or the part of its orbit closest to Earth, at 8:34 p.m. and will align with the sun one minute later, appearing even more resplendent, according to NASA. . . ."