What is a Supermoon? - 07/11/14
Tonight (technically early Saturday morning) the full "buck" moon of July will make it's appearance in the sky. But, you may have heard another term being thrown around with this full moon. Yes, the "supermoon" has returned. These full moons can appear a bit bigger, and a little brighter.
Why? It has to do with the moon's orbit. The moon's orbit doesn't make a perfect circle around the earth. Sometimes it'll become more rounded than oval, and vice versa. Every so often, the moon will become full at the "perigee" or, the point in orbit closest to earth. (the furthest point in orbit from earth is called "apogee") So, scientifically speaking... tonight's full moon is also called a perigee moon. Because it's at it's closest point to earth, it may appear a bit bigger and brighter.
Tonight will be a great night for moon viewing. We'll stay mild with mainly clear skies overnight. Enjoy!
(photo credit: NASA)