A "Supermoon" is a term used to describe the phenomenon when the full moon appears larger and brighter than usual in the sky. This occurs when the moon is at its closest point to Earth in its orbit, known as perigee, making it seem up to 14% larger and 30% brighter than a regular full moon.
The Supermoon of 2013 will occur on June 22-23, depending on your time zone. This will be the closest Supermoon of the year, with the moon reaching its perigee at a distance of 221,824 miles from Earth.
A Supermoon typically occurs around once every 14 full moons, or about once every year and a half. However, the frequency can vary due to the moon's elliptical orbit and the alignment of the Earth, moon, and sun.
While the Supermoon may appear larger and brighter in the sky, it does not have any significant physical effects on Earth. Some people believe that the Supermoon can cause natural disasters, but there is no scientific evidence to support this claim.
The Supermoon can be viewed with the naked eye, but for the best viewing experience, it is recommended to find a dark, open area away from city lights. Using binoculars or a telescope can also enhance the viewing experience and allow you to see more details on the moon's surface.