On June 23, you can see a moon that's looks bigger than it usually does. It's called a supermoon, and they occur between four and six times every year.
Basically, it happens when the moon comes closer to Earth than it normally does.
"The time of the full moon falls even closer to the time of the perigee," Earthsky wrote. That means that the moon will be even bigger. June's supermoon is the closest that the moon will be to Earth for the whole 2013 year.
Miriam Kramer of CBS News wrote that the moon will appear the closest on Sunday at 7:32 a.m. EST.
"At its closest on Sunday, the moon will be about 221,824 miles (356,991 kilometers) from Earth. On average, the moon is about 238,900 miles (384,402 kilometers) from the Earth.
Though it will be the closest to Earth on Sunday morning, it will still be very bright and appear slightly larger than normal on Saturday night (June 22). Either time will be a good time to check it out.
To see what everyone's talking about, here are photos from around the world of the 2011 supermoon.
If you want to get a few lunar shots this weekend, Wired has a few tips.
Or, if you don't want to go outside at all, watch the live webcast on Sunday from space.com:
-- Lucy Perkins, Michigan Radio Newsroom