The full moon Friday night will be the biggest one of the year as Earth's natural satellite reaches its closest point to our planet.

The moon's average distance from us is about 238,855 miles (384,400 km). Friday night it will be just 221,560 miles (356,567 km) away. It will be 14 percent bigger in our sky and 30 percent brighter than some other full moons during the year, according to NASA.

Tides will be higher Friday night, too. Earth's oceans are pulled by the gravity of the moon and the sun. So when the moon is closer, tides are pulled higher. Scientists call these perigean tides, because the moon's closest point to Earth is called perigee. The farthest point on the lunar orbit is called apogee.

Some other strange lunar facts:

The moon is moving away as you read this, by about 1.6 inches (4 centimeters) a year. Eventually it'll be torn apart as an expanding sun pushes the moon back toward Earth for a wrenching close encounter.

There is no proof the full moon makes people crazy.