Along the lunar orbital path, the point of closest proximity is known as perigee, which is when the moon is, on average, 226,000 miles (363,300 kilometers) from Earth. When a full moon phase coincides with perigee, a supermoon event occurs.

When the moon’s orbit brings it closer to Earth than usual, the cosmic combo is called a supermoon. Here's how to see it in the night skies.

The moon is expected to be near its closest point to Earth tonight, resulting in the largest supermoon this year, according to experts, an unofficial astronomical phenomenon that occurs up to four times annually.