The year's biggest and brightest full moon will rise Sunday night.

It'll be the second "supermoon" of the summer, and this one could be most impressive.

A supermoon is a full moon that appears unusually big. It happens when the moon, which orbits the earth in a slightly elliptical trajectory, is the closest to Earth it can get while also being full.

The moon may seem huge when seen close to the horizon, but that's just an illusion caused by its position in the sky. The best time to see the supermoon is just after it rises, which will be around 8:06 p.m. in the Tampa Bay area.



Supermoons aren't all that rare. In fact, there are three in a row this summer. The first occurred last month, and another is due Sept. 9.

The supermoon isn't all that's happening in the sky. The Perseid media shower, with as many as 100 shooting stars an hour, will peak around 2 a.m. Monday through Wednesday.