lunar eclipse of March 3, 2007 at 21
Late in the evening of Saturday, March 3 it was possible to attend from all over the Peninsula to the fascinating astronomical phenomenon due to the alignment between the Sun, Earth and Moon. A similar phenomenon will occur again only in 2026.
On March 3 (more precisely, in the late evening of March 3 and during the night between 3 and 4 March), there was a lunar eclipse, visible throughout the country. This type of eclipse can only occur at full moon, or when the Moon is in opposition to the Sun and when the geocentric longitude of the star and the satellite differ by 180 degrees, also, the moon must be located at the ascending or descending node .
The shadow created by the Earth due to the interception of sunlight from our planet. The eclipse is a partial or total depending on whether the Moon crosses partially or wholly the cone. Our satellite (see image is the site of the Astronomical Observatory of Padova) will be colored bright red, as the sunlight filtering through the atmosphere, will take on that aspect.
The show was very interesting, given that this situation will occur again only in 2026. When the land was due to an eclipse of the moon, the satellite never disappears completely in the shadow land, but remains of a reddish color. The features are modified shadow dal'atmosfera land (for this, during the eclipse is taking the opportunity to study the health of our atmosphere), which, by refraction, deflects the sun's rays and absorbs almost all wavelengths 'wave component sunlight, with the exception of those related to red, which, refracted - fall on the surface of the moon, giving it a red brick - this time, the phenomenon in question is present in its entirety, according to the value 3:04 (*) of the Danjon Scale.
The hours (local time) the start of the penumbra were:
Milan: 21 42 (maximum phase: 00 45), Rome: 21 28 (00 38); Catania: 21 18 (00 21).
(*) 3 = Eclipse red brick, with a shade with yellow edging;
Eclipse 4 = orange or copper color, very light, shadow with probable reflex blue.
Gian Carlo Ruggeri (Meteorology)
Text taken from: www.bolina.it
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