Monday, June 24, 2013

All with the nose tonight to see the superluna - Il Sole 24 Ore

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Into This entry was posted on 23 June 2013 at 14:40.

Into The The “superluna” 2012 above Rio Janeiro

Into superluna tonight. It is neither rose nor huge as promised by some joker on the web, but it will be clearly visible, a lot brighter than usual and a bit ‘bigger, to look at absolutely. No one has “changed” our satellite of course, only he or she if you prefer, we turn around in an elliptical orbit, as saying the shape of an egg is at the center of the Earth. Then turns away and walks over to us, even to a lot: from 363,104 km to the nearest point, perigee, the maximum distance at 405,695 km, apogee.

Into This happens every month or so, there is indeed nothing less than this from Sanskrit and means moon, but not always the Moon, than we tend well, it appears that is fully lit during the Full Moon. Only occasionally the minimum distance from the Earth is reached when there is a Full Moon, the last time was in May 2012 and the next will be in August 2014. Here is the superluna, word invented a few years ago by an American astrologer in the mood to d o a little ‘marketing with its horoscopes Full Moon and Moon at the same time at the minimum distance.

Into It runs the Moon and approaches not just then, 40,000 km of 400,000 to fix the ideas, we think of a machine that is set before us in the middle of the night with the headlights on, it makes a difference if there are 100 or 90 meters, when there is the closest we will see brighter and bigger. For the Moon the variation between minimum and maximum is 14% in size, very hard to detect if you are not experienced observers, and 30% more light, and this we can instead realizing all.

Into The color in which it appears, especially when it is on the horizon, then can vary from white to blue, in the middle of winter and in extremely cold climates, Finland, Siberia, Alaska, the red blood of American or African deserts. The difference is trivially the amount of dust in the atmosphere that is: the light of the moon, passing through, it becomes redder for a well-known physical effect. So much so that many of us will ever see a red moon at its rising, perhaps while you were chatting outdoors, which then became more and more white as it rose in the sky. The Moon is actually gray, as you can see from movies of the 70s of the astronauts who have been there, and dusty, since there is no atmosphere that can move the dust itself. Indeed, in the footsteps of the astronauts and their means of 40 years ago are still there untouched.

Into What the Moon, in particular that full, have an influence on Earth and we poor humans idea is as old as the world, the incidence of earthquakes and floods, to the fact that triggers werewolves and werewolves. Besides, even the great sages and saints, such as St. Thomas Aquinas, thought that the behavior of men would follow the phases of the moon, an idea that has remained in the word “lunatic”, heavily used against women to marginalize them from the important work starting since 170 0. All in all not need to go that far: women’s access to career as a magistrate in Italy was possible only in February 1963 after a discussion lasted six years on the psychophysical characteristics of the other half of the sky. And the Moon was there to watch.

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