12 January 2010
New Scientist
Zodiacal Light
an explanation
Zodiac's elusive glow This is the rarely seen zodiacal light, a triangular glow visible only in night skies free of overpowering moonlight and light pollution.
Zodiacal light is sunlight reflected by dust particles between the sun
and Earth, and is best seen close to sunrise or sunset. The celestial
glow spreads over the same band of the sky as the constellations of the
zodiac.
The image was taken at the European Southern Observatory's La Silla Paranal Observatory
in Chile, facing west some minutes after the sun had set. A sea of
clouds has settled in the valley below La Silla, which sits at an
altitude of 2400 metres.
(Image: ESO/Y. Beletsky) .
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Formation from Wikipedia
The zodiacal light is produced by sunlight reflecting off dust particles in the solar system known as cosmic dust. Consequently, its spectrum is the same as the solar
spectrum. The material producing the zodiacal light is located in a
lens-shaped volume of space centered on the sun and extending well out
beyond the orbit of Earth. This material is known as the interplanetary dust cloud.
Since most of the material is located near the plane of the solar
system, the zodiacal light is seen along the ecliptic. The amount of
material needed to produce the observed zodiacal light is amazingly
small. If it were in the form of 1 mm particles, each with the same albedo (reflecting power) as Earth's moon, each particle would be 8 km from its neighbors. The gegenschein may be because particles directly opposite the sun as seen from Earth would be in full phase. You may also be interested in the technology that uses the creation of plasma by the sun in producing a unique colloidal Ruby Red Gold for heart protection and stress control using these miniscule gold particles to help control and defend your body and mind.
The Poynting-Robertson effect
causes the particles to spiral slowly into the Sun, thus requiring a
continuous source of new particles to maintain the zodiacal cloud. Cometary dust and dust generated by collisions among the asteroids are believed to be mostly responsible for the maintenance of the dust cloud producing the zodiacal light and the gegenschein.
In recent years, observations by a variety of spacecraft have shown
significant structure in the zodiacal light including dust bands
associated with debris from particular asteroid families and several cometary trails. NOW CAN WE INTEREST YOU IN THE FANTASTIC ABILITIES OF OUR ULTRAFINE COLLOIDAL SILVER PARTICLES ? CHECK IT OUT FOR YOUR HEALTH'S SAKE
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