AP Photo/Wilfredo Lee
A jet plane leaving Miami International Airport flies in front of the moon, Saturday, June 22, 2013 above the skies in Surfside, Fla. The biggest and brightest full moon of the year graced the sky early Sunday as our celestial neighbor swung closer to Earth than usual, coming within 222,000 miles of Earth.
AP Photo/Julio Cortez
A "supermoon" is seen behind the Statue of Liberty, Sunday, June 23, 2013, in New York. The larger-than-normal "Supermoon" happens only once this year, as the Moon on its elliptical orbit is at its closest point to Earth, and is 13.5 percent larger than usual, affording an optical illusion as it looms larger on the horizon next to trees and buildings.
AP Photo/Julio Cortez
The Moon is seen in its waxing gibbous stage as it rises over Lower Manhattan, with One World Trade Center at center, as seen from The Heights of Jersey City, N.J., Saturday, June 22, 2013.
AP Photo/Charlie Riedel
A full moon rises beyond the Church of Jesus Christ of Latter-day Saints temple in Kansas City, Mo., Saturday, June 22, 2013. The Moon, which will reach its full stage on Sunday, is expected to be 13.5 percent closer to Earth during a phenomenon known as "Supermoon."
Chris McGrath/Getty Images
A plane passes in front of the haze-obscured "Supermoon" over Singapore, June 23, 2013 in Singapore.
AP Photo/Eric Gay
A hazy "Supermoon" is seen behind lighted smoke stacks at the Alamo Quarry Market in San Antonio, Texas, Saturday, June 22, 2013.
While the Moon will appear larger than normal, sky watchers won't be able to notice the difference with the naked eye.
Still, astronomers say it's worth looking up and appreciating the cosmos.
"It gets people out there looking at the moon, and might make a few more people aware that there's interesting stuff going on in the night sky," Geoff Chester of the U.S. Naval Observatory said in an email.
AP Photo/The Fayetteville Observer, Johnny Horne
A closer, brighter full moon dubbed a "Supermoon" is seen around 12:30 a.m., on Sunday, June 23, 2013, in a photo taken through an amateur astronomer's 5-inch refractor telescope, near Stedman, N.C.
AP Photo/J. David Ake
A full moon rises behind the Jefferson Memorial in Washington, D.C., on Saturday, June 22, 2013. The larger-than-normal "Supermoon" happens only once this year, as the Moon on its elliptical orbit is at its closest point to Earth.
AP Photo/Chuck Burton
A full moon rises beside the Bank of America corporate headquarters in downtown Charlotte, N.C., Saturday, June 22, 2013. The larger than normal moon called the "Supermoon" happens only once this year as the Moon on its elliptical orbit is at its closest point to Earth.
AP Photo/Patrick Semansky
A full moon rises through a hazy sky over street lamps, Saturday, June 22, 2013, in Baltimore. As in any supermoon event, high tides are forecast because of the Moon's proximity, but the effect is expected to be small.
AP Photo/Chris O'Meara
A "supermoon" sets behind the top of one of the minarets at the University of Tampa Sunday, June 23, 2013, in Tampa, Fla.