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Summer of Supermoons Starts Tonight
The summer of supermoons kicks off this weekend.
NASA says this summer's full moons will all be supermoons. The first will be visible tonight and tomorrow night.
Supermoons form when the closest point in the moon's orbit coincides with a full moon. A supermoon looks much bigger than usual, especially near the horizon, hence it's name.
It happens fairly often, but not usually so close together.
"And it's about once a year, once every 14 lunar months, one of every 14 lunar moons is like this, and you know, most of the time people don't recognize it at all."
If you miss it this weekend, it will happen again August 10 and September 9. Experts say the August 10 supermoon will likely be the brightest of the two.