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There are supermoons —  and then there are supermoons that only come around every now and then. 

This weekend, we'll get the latter: our closest full moon since 1948, when gas was 16 cents a gallon and Truman defeated Dewey. It won't happen again until 2034. 


You'll be able to see it best Sunday night through Monday morning, but the night skies on Saturday and Monday will offer spectacular views of the moon. 

Showstopper Nov. 14 Supermoon Is the Closest Moon to Earth Since 1948


The orbit of the moon around Earth is not quite a circle, and the distance between the two varies from around 225,000 to 250,000 miles. 


A supermoon happens when the perigee — the moment at which the moon is closest to Earth —  coincides with a full moon.


At its closest point, the moon will still be about 225,000 miles away, but it will be close enough for our eyes to notice the difference. At its peak at 5:22 a.m. Central on Monday morning, the moon will be about 14 percent bigger and 30 percent brighter than the smallest full moon. 


NASA will post a collection of images of the supermoon on 

How much do we really know about the moon?


Even though it is our closest celestial companion, we are still learning about the moon — and, in turn, the rest of the solar system. For the past 7 years the moon has had its own guest in orbit, the 

, a satellite dedicated to studying it.  


"Understanding the moon and  seeing how it's changed and knowing more about what it's history is like tells us about the history of the solar system," said Alex Young, associate director for science at NASA's Goddard Space Flight Center, "we use the moon as a measure of what is happening everywhere else." 


Before scientists understood the moon in that crucial context, it was regarded as as a dead and sterile place, unchanging over time. But, as they observe it, scientists now see the dynamic environment of the moon, with meteoroid strikes and other forces working to change its face, albeit slowly. 

And a better understanding of the moon  helps us better understand the forces at work on 

William Lager

Author

The near swing of the moons's orbit is bringing us the supermoon of 2016 a mere 225,000 miles away.

Look up and see the brightest moon since 1948

Go Deeper.

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