I overslept this morning but I’m hoping I can still catch remnants of it tonite. The best time to view it was at 4:30 PDT.

The full moon tonight is called a super perigee moon since it is at its closest to Earth in 2011. The last full moon so big and close to Earth" alt="The full moon is seen as it rises near the Lincoln Memorial, Saturday, March 19, 2011, in Washington. The full moon tonight is called a super perigee moon since it is at its closest to Earth in 2011. The last full moon so big and close to Earth" How to see the supermoon

Weather permitting, everybody should be able to see the supermoon. The moon will be rising from the east right around sunset, Thaller said. It will appear huge and low on the horizon before rising brightly into the sky for the night. Saturday and Sunday should both be ideal viewing opportunities.

You can also watch a live webcast of the supermoon on beginning on Sunday beginning at 9 p.m. EDT (0100 June 24 GMT), courtesy of the online Slooh Space Camera, an online skywatching website (

Supermoons occur about once annually, and this year, the supermoon is closer than it has been in a little while, Thaller said.

The distance from the Earth to the moon varies along the rocky satellite’s elliptical orbit. Perigee differs from month to month, so sometimes the supermoon is a little closer or further away, Thaller said.

“The closest the moon gets can actually vary much as much as the diameter of the Earth,” Thaller said. “That seems like a pretty big number, but the moon is actually 30 times the diameter of the Earth away from us. If you line up 30 Earths, that’s about the average distance of the moon away, but as it swings a little bit closer to us, that distance can vary.”

The sun can be to blame for the difference in distance. In the winter, when the Earth is closest to the sun, a supermoon could be even closer and more stunning, Thaller said. The strength of the sun’s gravity pulls both the moon and the Earth towards it slightly, making the moon dip closer to the planet.


Science from a supermoon

Although it might be a brilliant skywatching opportunity, not a lot of scientific research comes from the supermoon. Scientists prefer to study the moon from a closer vantage point, Thaller said.

“The supermoon for [scientists] is a fun chance to talk about the changes in the sky [and] observing the universe,” Thaller told “As scientists, we like to observe the moon a little bit closer up and right now we have LRO, the Lunar Reconnaissance Orbiter, a spacecraft actually orbiting the moon. We’re taking these incredible high resolution pictures of the entire lunar surface.”

Editor’s note: If you snap an amazing photo of the Sunday supermoon and you’d like to share it for a possible story or image gallery on, please send images and comments, including equipment used, to managing editor Tariq Malik at

Follow Miriam Kramer @mirikramer and <a


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