The full moon rises above Washington on June 23, 2013. This 'super Moon also known as the 'perigee' full moon appears about 14 percent larger and 30 percent brighter than a regular full moon, according to NASA scientists. AFP PHOTO/Nicholas KAMM
In practice, it's not always easy to tell the difference between a supermoon and an ordinary full moon. A 30 percent difference in brightness can easily be masked by clouds and haze. Also, there are no rulers floating in the sky to measure lunar diameters.
There will be a full moon in the sky starting Friday night and into early Saturday, and this time around the super-sized satellite will look larger than usual. When a full moon occurs at the same time that its orbit brings it closest to
The moon will seem a little bit bigger and brighter Saturday morning when a “supermoon” — the first of an expected three this summer — will be visible, according to NASA. The occurrence, also called a “perigee moon,” takes
Here are some of the most spectacular photos of the supermoon, which can appear up to 14% larger and 30% brighter than a typical full moon, to appear on social media so far this weekend. Below, you can find a live stream