Spaceweather.com says, The Moons orbit is an ellipse with one side 30,000 miles closer to Earth than the other. The full Moon of Oct. 25-26 is located on the near side, making it appear as much as 14% bigger and 30% brighter than lesser full Moons weve seen earlier in 2007.
In the language of astronomy, the two ends of the Moons orbit are called apogee and perigee. Apogee is the farthest point, perigee the nearest: This weeks full Moon is a perigee Moon with extra-high perigean tides.
The Moon is 14% bigger, but can you actually tell the difference? Its not so easy. There are no rulers floating in the sky to measure lunar diameters. A fun experiment: Take a friend outside Thursday night and ask if they notice anything unusual about the Moon. Explain perigee after they answer.Tonights full moon, which will appear above the southeast horizon shortly after sunset, will be significantly bigger and brighter than every other full moon weve had this year, say scientists.